FAQs on Valenciennea/Sleeper, Sifter Gobies:
Related Articles: Genus
Related FAQs: Valenciennea 1, Valenciennea 2, Valenciennea Identification, Valenciennea Behavior, Valenciennea Compatibility, Valenciennea Selection, Valenciennea Feeding, Valenciennea Health, Valenciennea Reproduction, & FAQs on:
Marine Scavengers 1,
2, Goby Identification,
Goby Behavior, Goby Selection, Goby Compatibility, Goby Feeding, Goby Systems, Goby Disease, Goby Reproduction, Amblygobius Gobies,
Clown Gobies, Neon Gobies, Genus Coryphopterus Gobies, Mudskippers, Shrimp Gobies,
Yes... they jump
Golden Headed Sleeper Goby. Sys., feeding, gen...
There is much conflicting information as to whether the male or female
Golden Headed Sleeper Goby (V. strigata), guard the eggs. Most state it
is the female, however “official” places say the male guards them.
<Usually the male as far as I know>
Also, why are they called Sleepers?
<For their propensity to "lay down" on the bottom>
They seem to busy to be slacking off! Have they been successfully raised
Fishbase.org states they have a lifespan of 1 year.
<Mmm, perhaps two>
This seems to line up with how long most people can keep them, however I
had one for 1.5 years in a 150 gallon tank years ago (lost it due to a
tank crash because the “sitter” didn’t top it off)…. I was new to the
hobby at the time and should have had a top off! So my guess is they may
live to around 2 years in captivity, and should be obtained while small
and as pairs if possible. One source said they were full grown at 4
months (after they settle in the reef), and one source, which I have to
disagree with, said if they are not paired up they do not live as long….
<Interesting... perhaps anthropomrphising, but one rarely encounters
non-pairs in the wild>
such was not my experience. Your thoughts? Sorry, these are tough
questions, but I would enjoy the answers for a write up I am doing! On a
side note, is it possible that it may not be that they are as hard to
take care of, but waste away due to them possibly just being at the end
of their life cycle?
At times, they are not FED enough by an alert aquarist (or they may have
internal worms and should be treated for that after purchasing).
And why in the WORLD do some websites that SELL them state that 30
gallons is enough?
<A mistake; just marketing: The way of the businessperson is sales and
UGH! Makes me want to send a strongly worded email! lol On a side note,
mine ate prepared foods and was a huge fatty in my 150 gallon, so based
on that, would 75 gallons be enough for one, 150 gallons for two?
<The bigger the better... would express in terms of open/sandy area
square footage per... at least 3-4/>
(they occupy a space of 2’ x 5’ in the wild so 150 gallons is larger
than that, and with a refugium should help the fauna levels in the sand.
If a person didn’t care if their sand was dead, what would be the
smallest tank size for one that fed on various prepared foods?
<Would depend mostly on the types and frequencies of foods; and the
individual fish; their developmental history>
Or do they just NEED fauna from the sand?
<Almost entirely this>
Thanks for your time and energy!!!
<Thank you for sharing yours. Bob Fenner>
Valenciennea puellaris And Deep Sand
Bed/Valenciennea Systems/Feeding 11/23/10
I am writing you fine folks today with several questions regarding the
potential for keeping Valenciennea puellaris while simultaneously
maintaining a healthy deep sand bed.
<Can be very challenging in your size tank.>
I did follow WWM guidelines on research through your site but fell
short of getting any solid answers to the questions I have so please
excuse any redundancy. My current tank set up is this: 90 gallon marine
phos, ammonia, nitrite & nitrate are all undetectable.
150-200 lbs live rock, various lps corals, some Zoas.
Equipment is as follows: (2) dual 54w T5HO with 75% actinic lighting,
(2) 100 gpm powerheads (I know I need more but how much?), Remora Pro
skimmer, Fluval 405 canister filter (used for Phosban and occasionally
carbon), tank heater.
At this moment, I am keeping only a Fire Shrimp, Peppermint Shrimp,
green bta, and several snails (my fish were wiped out due to an
Oodinium outbreak about a month ago and I am letting the tank run
fallow for several months [quarantine tank is set up and ready for
future livestock]). In my tank I have a substrate consisting of very
fine (almost sugar fine) non silicate sand at a depth of 4.5 to 5
inches depending on where in the tank you are looking. The tank has
been running for nearly a year now and at night you can see a multitude
of minuscule creatures resembling shrimp and other creatures too small
to make out yet detectable nonetheless (I use a flashlight which lights
up their eyes somehow) running about across the sand bed and all around
the base of live rock all about the tank. I have noticed that at no
time since running the dsb have I ever been able to detect any nitrates
which I attribute to the dsb and also possibly to the skimmer (both
working hand in hand?). My first question relates to the notion that
having a sand sifting goby gobbling up all of the critters that make up
the fauna in the first layer of the sand bed is bad for the
denitrification function of the sand bed itself, is this true to the
best of your knowledge?
<In your size tank, definitely.>
I hate to think that all the work and time put into this functioning
wonder would be destroyed just to appease my desire for a gleaming
white sand cover.
My next question is, would the sand bed fauna be able to reestablish
itself while the goby feeds on the critters found in and around the
first and possibly second layer of the sand bed. I do not want to watch
a fish such as this starve to death due to an insufficient supply of
copepods etc. Finally, would certain areas of the tank not penetrable
by fish such as a cluster of smaller dead coral boulders in the corners
act as a refugium for the copepods in question (I have noticed them
concentrated in these areas)?
<Is likely you only see many there because it is
I have searched for answers on this topic and have come up with a lot
of different opinions, most of which I do not trust. This is why I am
asking you good people today. I love your site and respect the opinions
and experiences of all of your staff, I am a big fan of Mr.
Fenner's work and hope to buy a copy of "The Conscientious
Marine Aquarist" sometime soon.
Thank you for your time and attention to my questions, much
<Your tank/sand bed is much too small to keep these fish for any
length of time without supplemental
feeding as they will soon strip your sand bed of beneficial fauna and
then slowly starve to death.
They are not a good choice if you have a functioning DSB as yours
appears to be.
Although it's not impossible to keep them in smaller systems such
as yours, supplemental feeding will be a daily chore. Some folks have
had some luck by burying food near their burrow which the fish will
sense and begin digging to locate/eat the food. If you are lucky,
eventually they will sense the food as you put it in the tank and eat
off the bottom. Keep in mind that this suggestion does not always work.
There are other critters useful to do this that require little to no
care, they can consist of small Brittle Starfish, Nassarius Snails,
and/or a Sand Sifting Starfish. In your system, no more than one small
specimen of the later.>
<Cheers, James (Salty Dog)>
Likely Territory Size for Orange Spot Watchman
Goby? -- 10/29/10
I was looking to purchase an orange spot watchman goby to help stir up
my DSB and handle a light-but-persistent diatom problem in my sand
<<A great fish for this -- if you can handle them
'crop-dusting' your rockwork/sessile inverts as they glide over
your reef expelling a mouthful of substrate as they go. Just a
not'¦ An Amblygobius species would be less prone to this than
the Valenciennea puellaris you mention here, but, will be more
'disturbing' to a DSB re its burrowing>>
I was wondering how large a 'territory' the goby is likely to
work -- in terms of distance from its burrow, once it chooses one.
<<In my experience, this fish and other species like it (e.g. --
Amblygobius species, etc.) are going to 'work' the entire
substrate in most any 'hobby-size' system. Even though they
will accept most prepared foods offered (and this is key to their
long-term good health as most every hobby system will not provide
enough 'natural' substrate fauna), the fish is still going to
forage throughout the tank>>
It would be great if one fish would 'wander' throughout most of
the tank to feed, but I'm not sure if this is likely.
<<It will -- it will also 'move' its home/burrow from
time to time>>
And/or how far of a distance he (or she) is likely to be belligerent
vs. another goby, if they're not a mated pair.
<<For all but the largest systems ('several' hundred
gallons or more) it's best to keep one to a system -- even of
different but similar species>>
I've got a six foot 220 gallon reef... two moderately sized LR
'mountains' separated by a couple feet of bare
<<Very nice - a sugar-fine substrate is preferred by the
which seems to minimize territorial issues.
I know it's unusual, but I've actually got three pairs of adult
clownfish (black-and-white, true percs, and maroon and gold)
established and dwelling together in peace by making sure the terrain
is separated by horizontal and vertical rock faces, and making sure
they bonded with different 'host' species (green fuzzy
mushrooms, frogspawn, and Zoanthids, respectively).
<<Hopefully the peace will continue as these fish
Thanks in advance for any help on this...
<<Happy to share'¦ EricR>>
Shrimp And Goby/Blenny/Compatibility
Hi, James (salty dog)...
Anyways I have 2 questions, 1st can a skunk cleaner and a Coral Banded
Shrimp live peacefully in a 37 gallon FOWLR?
<No, your cleaner shrimp will be at risk.>
(at my LFS I've seen a gold coral banded shrimp and a skunk cleaner
live together in a tiny tank, but the gold CBS in that tank was much
much smaller than mine.) and my 2nd question is whether a Bi-Color
Blenny and Diamond Goby can peacefully in that same 37 gallon?
<Your size tank will not support a Diamond Goby long term. The
Diamond Goby requires a larger system (50+ gallons) with an active live
sand bed to supplement prepared offerings of food. You may want to read
the FAQ's here on Valenciennea/Sleeper, Sifter Goby systems.
thanks for your insight.
<You're welcome. James (Salty Dog)>
Diamond Goby and LR 11/25/09
Hello again Crew !!!
Once again I call to you for some of your wonderful knowledge and
About a month ago, I introduced a 5" Valenciennea puellaris to my
125 gallon / 100 lb LR tank. He/she was sitting at my dealers for many
months, hence the size, and used to eating frozen foods (i.e.
Mysis, brine, krill).
Of course, he fit right in and began to re-arrange my aquarium to his
liking. Lots of tunnels and stuff and
he sprinkles sand on my LR above his cave. He also loves to snatch
empty clam shells my puffer leaves and use them to "decorate"
his home. Quite a character.
My question is this, when my LFS first came over to set up my system,
he placed all my LR on top of the substrate. Some, leaning against the
<Mmm, well, first off, I'm not a big fan of such walls... better
to re-arrange into bommies, individual assemblages away from the
Needless to say, I have algae growing in places I can't seem to get
too because I do not want to disturb the LR and fear caving in the
<Get a large, new or clean trash bin, or plastic tubs, drain a good
deal of the water down, take out rock, and place back as you like it...
with the bottom pieces placed on the bottom, not on top of the
I'd like to re-arrange this system a bit including burying some of
my LR in the sand to promote a more stable environment for the goby and
pulling it away from the back glass, possibly putting a small powerhead
in the back to promote more circulation.
<Oh! We are on the same proverbial page>
When I'm in my tank messing around doing water changes and such, he
runs and hides into his cave. Any
suggestions on how best to accomplish this without harming him?
<Not really possible... but better to do the rearrangement all in
Do you think it would be best
to just leave well enough alone?
<Not I, no>
Question of curiousity...this has been bugging me. What does
"heavy skimming" mean exactly?
If I have my skimmer on all the time is that heavy skimming?
<Mmm, no... refers to sizing (per the system) and efficiency
really... That is, a tank that has a big skimmer that really removes a
bunch is considered "heavily skimmed">
<Less so now though. Cheers, Bob Fenner>
Questions About Valenciennea sexguttata/Six Spot
Sleeper Goby/Systems/Feeding 9/21/09
I have recently started my first nano reef (4 months old, 34 gallon)
and my wife thinks the reef and WWM gets more attention than she does
now days :)
<Usual behavior for this species.>
The aquarium is running stable with a small cleaning crew, 2 Amphiprion
ocellaris, 1 Meiacanthus oualanensis and a couple of corals I received
from friends I made through the new hobby (Euphyllia glabrescens,
Euphyllia Parancora, Montipora capricornis, Sinularia Dura and a
Lobophytum sp.). The
tank is fed with Brine shrimps, Mysis, algae pellets and ordinary
I'm now searching for a fish that would occupy the lower half of my
aquarium and found the Valenciennea sexguttata that looks nice, lives
in the lower half and even helps me keep the sand sifted, but I'm
not able to
find enough info online that isn't more like rumors and I don't
want to make any bad decisions here so I wonder if you would like to
comment some of the rumors I have read.
I'm concerned that the fish might be to large for my tank but
people (including LFS) say it grows really slow and some keep it in 10
G tanks successfully, would you agree?
<No, this fish does better in larger systems with a well established
Rumors also states that even if it's a sifter it doesn't toss
the sand around that much, and it's not any trouble to get it to
eat Mysis or brine if there isn't enough algae, do you agree?
<I've seen these fish take to prepared foods quickly, and saw an
equal amount starve to death. Just sharing my experience with the
Finally, do you think it's ok to keep the fish with the once I
have? I don't have any plans on expanding on the fish side after
this last one that needs to be a bottom dweller.
<I would not add, believe it will be short lived in your
Thanks for any help and I really enjoy reading the FAQs on the site
<You're welcome and glad you enjoy. James (Salty Dog)>
Orange Spotted Goby I have tried 2 Orange Spotted
Gobies in my 150 gal. tank w/ live sand, rock, and coral. I have a full
hood on this tank with a 3" open area in the back. The problem is
these fish keep jumping out. I did not know this when I purchased the
first one (I have never had a fish jump out before) and after
purchasing another I covered this opening with Plastic wrap for the
first week or two, but he too discovered a small opening in the corner.
After the first one, I added some 1" PVC at the base of some rock
and #2 immediately made a home and moved a lot of sand around the pipe
cavern, I really felt he was fine. The only other fish in the tank are
7 green Chromis and they never bothered the gobies. I have 2 sand
sifting stars, some red leg hermits and a bunch of snails, none of
which should bother them. My brother purchased one at the same time I
did and with no lid his seems to be doing fine.
Orange Spotted Goby Is the Gold headed Sleeper a
jumper as well? How is it with the sand sifting? Thanks, Jeff Phillips
>> A good sifter, and jumper... of the same genus
(Valenciennea)... Bob Fenner
Jumping Gobies! Good Afternoon (or whatever time
it is when you come across this email). <Afternoon here- Scott F.
with you> This pertains to recently purchased Gobies. I have tried 3
times to keep a Maiden Goby (Valenciennea Puellaris) or sometimes
called Diamond Goby. Each time it leaves the comfortable surroundings
of my tank for a much harsher environment - the carpeting. I have lost
3 of the same type Gobies this way. The last one, which jumped last
night, lasted less than 12 hours. A little tank information: I have a
reef set-up 45 gallon tall. I currently have a little over 13 tank
turnovers per hour but my oxygen level is still low so I plan on adding
another power head to bring my turnover rate to near 20/hour. <The
low oxygen level is of concern...do add more circulation and surface
agitation for gas exchange> I have removed the top on my aquarium in
order to bring the O2 level up with little success. My skimmer is
properly sized and working great. After the first Goby committed
suicide, I purchased and installed a section of egg crate (louver) over
the approx. 4" open section behind my light (light sits directly
on top of tank). The second Goby found a way out of this so I decreased
some of the cutouts (for HO Skimmer and the like) where there were no
openings larger than the 1/2" X 1/2" squares. My 3rd Goby
worked his way out of this last night. I even tried a night light that
was suggested. My question is this: I like the Goby and it's sand
sifting properties. Is there anything I can do other than covering tank
with screen like material and/or buying a Goby larger than the
1/2" openings? <Unfortunately, I think that using a screen like
material is your best bet (Fiberglass, not aluminum), short of covering
the whole top with acrylic or plastic. If the fish wants to get out and
become "reef jerky", as they say, about all you can do is
make the task more difficult for it> Are there any other Gobies or
Goby like fish that sift like the Goby but that don't like to jump?
<Unfortunately, a lot of these types of fishes (sand sifting gobies
and Tilefishes) tend to have the jumping habit. Personally, I have
always used brittle stars to do the job. In actuality, there are a lot
of people who argue (and I think quite correctly, in many cases) that
sand-stirring creatures are not needed in most well-maintained sand
beds, as they tend to decimate the sandbed fauna that contribute to the
function of the sandbed.> I hate to have to switch to the sand
sifting stars. They aren't nearly as fun to watch. Any suggestions
are appreciated. Thanks, J.T. Craddock <Well, J.T.- I think your
best bet is to use the screen material, or to simply discontinue the
use of these types of fish in your tank. Wish there was a better
solution I could offer, but I think that your options are kind of
limited in a situation like this. Good luck! Scott F.>
Sand Sifting Gobies...heavy bio-load and nutrient
problems 12/1/05 Hello Crew <Hello.> I was at my LFS
the other day and became extremely fascinated with the blue cheek
gobies they had. Anyways I believe there would be room in my tank which
is a 29 gallon FOWLR that consists of 2 ocellaris clowns 1.5"
each, 2 yellowtail damsels 1" each, <Watch the damsels
they may get "evil" with age.> a six line wrasse 2"
and a coral banded shrimp. Right now I have a crushed coral base (but
was planning on converting to sand anyways), hang on filter and a small
amount of live rock (2lbs maybe). I have had this exact set up for
about six months and do 25% water changes once a month. Nitrates are
usually in the 30 range. <This is a bit high... shoot for 10 or
less. I would look into a protein skimmer.> Also I should be
upgrading to a 55 gallon within the next year. Do you think that
adding a small (I know they can grow up to 7") blue cheek goby
would upset my levels that much if at all. If it would could a solution
be adding some small hermit crabs to process the extra detritus, or
would adding more live rock be a better alternative. (I already know
more water changes would be the best but they're a pain where my
tank is at right now so I'm trying to go for convenience.)
<With your current load I would skip this addition. Not only due to
its potential size but also due in part to what is in your tank
already. Also more fish will not help your current nutrient problem.
This animal also prefers larger tanks with well established Deep Sand
Beds.> Thanks in advance for the guidance <Welcome.> Mike
Turner <Adam J.>
Star(fish) Wars Part III... covered sys.
7/03/06 So after my orange brittle star tried to eat one of my sand
sifting stars, I told the aquarium shop if I could return it because it
was being aggressive, they said I could but I would get no money or
store credit for it. <That's unfortunate.> It
sucks so I decided to keep it. Since I have two other brittle stars, a
greenish, an orange (the aggressive), and a black-reddish
one. Well after that I noticed that my diamond watchman goby
was not around, he would always come out of his cave for hours to eat,
then yesterday I didn't notice him at all. I had my
fiancé© move rocks today and try to find it and when he was
checking the wet and dry, long and behold my beloved watchman goby was
dry and toasty as a French fry under my dining room table which is next
to the tank. I am just wondering why would he jump out of
the tank. <Perhaps startled by something, running from
something, water quality, and sometimes its just a mystery.> I did
noticed when I was buying him at the aquarium shop that while the guy
was trying to catch him with the net it seemed that he was going to
jump out of the tank, he was swimming that fast and up towards the
surface, so I am just wondering if it was that perhaps the brittle star
tried to eat him or something and to escape, he
jumped. <Possible, they are know as a bit of a jumper
anyways.> I was so sad, it was a great addition to my 180
tank, it had character and really kept my sand super white, along with
my sand sifting stars and yellow headed goby. Would you provide with
some light here? I need to know if my thought is
correct. He was like two inches and I thought that I was
going to keep him for a long time. <There are many reasons why fish
jump, escaping a predator is just one potential reason, hard to say
with any confidence what happened.> <Chris>
Will a Sleeper Banded Goby be to <too> big for a
30 gallon tank? 11/12/06 Hello, i <I> have a 30 gallon
tank with a valentini puffer, 2 fire fish, <Need more room> and a
yellow tailed damsel with about 2 inches of pretty fine sand (1/2 live
1/2 reg sand). Everything has been great the past few months but I am
getting a lot of algae growth on my sand that I don't really like
so I was thinking about getting a sand-shifter goby. I like the Sleeper
Banded Gobies but I herd <heard> they can get up to 6" but
they are ok in 30 gallon tanks. Do you think he will be ok? if not what
would be a good sand-shifter goby? Thank you for your time. <Mmm, I
wouldn't add one of these here... the system is too small, and
already has some fishes that won't appreciate sharing their niche.
Re: Will a Sleeper Banded Goby be to big for a 30
gallon tank? 11/12/06 Thanks for the quick response, but is
there anything I can get to help move the sand around? <... please
see WWM re... there are articles, FAQs files archived re the topic.
Sandsifting goby, how big a tank? 9/16/06
Hi there, <Hello> I have a 29 tall tank that has 2 (paired)
clowns, a few corals and a cleaner shrimp. Tank is quite stable. We
would like to add a new fish and I became enamored by a Sand Sifting
Goby at the LFS. It is labeled as a Diamond Goby, but it is more green
and brown in color, has bands and two small black spots as well. I
think it is a Barred Goby. I would guess the fish is about 2 inches. We
put it on hold, but now I am worried we don't have enough sand for
it. I also read that they will eat regular food, too. Is this a bad
fish for us? If so, do you have any suggestions on an interesting
addition for our tank? <I think the more important question is how
established is your sand bed. Sand Sifting gobies need a
well established sand bed with lots of micro fauna to feed
on. The only problem is that in a small tank, they can
sometimes wipe out the entire population. Yes, some will eat
prepared foods, but not always guaranteed. I would
definitely make sure he is eating before you take him home. -- Cheers!
Dr. J> <<Yep, he's new! RMF>>
Re: Marine Substrate Q; Sand Size for Goby --
05/08/07 good day to all! <Hello Again.> (follow-up question)
sir <No formalities, Adam or AJ is fine.> regarding the size of
my sand, it is about 1mm to 2mm, is that okay for fishes that tend to
burrow in the sand like a yellow wrasse and a sand sifting goby? will
they get hurt since it is not a sugar fine sand? <Depends on how
small the specimens are, but if your getting an average sized goby,
this shouldn't be a problem.> thanks! <Welcome, Adam
Valenciennea wardii -- a brackish water fish? 10/24/07 An
aquarium store called 'Arizona Aquatic Gardens' is
selling Valenciennea wardii as a freshwater fish, though
recommending it as a brackish water fish (the salinity range
suggested spans about SG 1.006 to 1.010). I've never seen
this fish traded as a freshwater fish before, and would be
curious to know anything about this fish. Is it indeed a
euryhaline fish, or rather a true marine fish that happens to
tolerate brackish/freshwater for a while? <Likely the latter.
Only skimmed through some literature, since I cannot give any
first hand information (I'm leaving this query in the marine
folder in case someone else can). Following secondary literature
(e.g. fish guides) this species is a true marine fish inhabiting
sandy substrates. Valenciennea spp. are sand sifters and I guess,
aside their apparent long term intolerance to fresh water, it
could be hard to properly feed them in a fresh or brackish tank
in the long run, since well populated sand beds are rare in these
setups. What I found in books is basically the same what is
written on fishbase.org: shallow marine, found on sand beds close
to reefs, silty slopes, lagoons and coastal bays (perhaps some
ventured into an estuary and were caught there). If you want more
information, you'd probably have to look at: D.F. Hoese and
H.K. Larson (1994): Revision of the Indo-Pacific Gobioid fish
genus Valenciennea, with descriptions of seven new species.
Indo-Pacific Fishes (23):71 p, or contact the authors. I'm
not in the library today to look up more about Valenciennea
wardii in this piece, but I guess it is a taxonomical piece,
which usually have at least a little ecological information.
Since V. wardii is said to be rare it will also help to confirm
the ID of the sold gobies. Marco.>
Valenciennea wardii 10/24/07 An
aquarium store called 'Arizona Aquatic Gardens' is
selling Valenciennea wardii as a freshwater fish, though
recommending it as a brackish water fish (the salinity range
suggested spans about SG 1.006 to 1.010). I've never seen
this fish traded as a freshwater fish before, <Me neither.
Have only encountered as a full-marine> and would be curious
to know anything about this fish. Is it indeed a euryhaline fish,
or rather a true marine fish that happens to tolerate
brackish/freshwater for a while?
Neale <Likely you too looked on Fishbase:
http://fishbase.org/Summary/SpeciesSummary.php?id=12615 Listed as
a marine... I don't think any member of the genus will live
long, well in other than full-strength seawater. Cheers,
Elegance Acting Funny... reading...
10/24/07 Hey CREW! <Howdy!> I bought a 1 year old 14
gal BioCube 2 months ago. The owner had an elegance and a colony
of Zoanthids in it. <... too small for a Catalaphyllia...>
My problem is, the elegance has been growing, and growing, and
growing, and is now waaaay too big for my tank. <Yes> Then,
2 days ago I bought a yellow watchman. <Too small for this
Goby...> He immediately began hosting the elegance, and now
the yellow watchman has been gone for 4 days, <Ooops.
Consumed> and the elegance has been (what looks like) filling
up with air, and its color is going from light purple to a dark
"bruised" looking royal color. <Ate too much> Why
does it look like the elegance is "inflating?" And do
you believe she has eaten the watchman? <Oh yes> I have
moved my 15 pounds of live rock and he has not come out. Any
advice is greatly appreciated. <Get a larger system... Read
here: http://www.wetwebmedia.com/elegance.htm and the linked
files above. Bob Fenner>
Re: Elegance Acting Funny, Valenciennea...
reading 10/25/07 You say the tank is too small
for the yellow watchman. I'm moving in 2 months, at which
point I will have the room for a larger tank. Money is no object,
and I plan on spending a lot of it. <Ok> So my question is,
what do you think a good ratio for "inches of fish:
gallons" is? <Posted...> And I would like to know the
answer based on the current size of the fish, not the adult size,
as I said, I know I will be upgrading the tank, and I look
forward to doing so. I have kept freshwater fish successfully for
8 years and I go with 1" per 5 gallons for most fish.
<... see WWM re Goby, this species... Systems> Also, what
is your opinion of nano tanks? <Also posted... can work, often
don't...> I have seen seahorses in 2.5 gallons, my LFS had
an engineer goby in 10 gallons, and I see nanos all the time with
mated pairs of clowns in 8 gallons. Where do you draw the line?
<Posted... at about 40 gallons> Thank you for sharing your
knowledge. <Thank you for looking, reading what is archived
ahead of writing. BobF>
Sand sifting goby question...sys. mostly
3/2/08 Hello crew, I've been enamored by the two spot goby
(Signigobius biocellatus) since I saw it. I would like to get a pair of
these for my 75 gallon tank. I would like to upgrade to a 180 gallon
next spring. I know they're not a beginner fish and am committed to
keeping them alive. I do I have a 30 gallon sump with the middle part
being a refugium with Chaeto and rock rubble. I've got a couple of
questions for you, but I'll start off with all my parameters. SG -
1.025 pH - 8.2 Alk - 9 dKH Calcium - 400 The current tank inhabitants
are a pair of ocellaris clowns who refuse to go into the nice Green BTA
that has been in the tank for 8 months (that's a whole 'nother
story though), a small (4") powder blue tang, flame angel, a plump
mandarin, and an orange Firefish who enjoys hiding. There is about 90
pounds of nice established (3+ years) Live Rock. I have a mixed reef
including some SPS, LPS, Zoas and a few other softies. Water changes
happen every other week of about 15 gallons. I dose B-Ionic daily. I
skim with an Octopus nw-150, but don't actually get a lot of
skimmate. <I'd look into a better skimmer> I have a mandarin
who is plump and happy. He is doing well. I've had him for about 9
months now. He munches on pods all day. When I feed the tank Formula 1
and 2 pellets he hunts them down as soon as they hit the sand. Do you
think I could house a pair of two spot gobies? I wouldn't want any
of them to starve. <May eat too many "pods" to suit your
Dragonet> My second question has to do with sand grain size. I
currently have an aragonite play sand. The sand ranges in size from
.5mm to just over 1mm. The two spot goby doesn't grow very big, so
I'm assuming that it needs a fairly fine sand to sift. Would this
sand be okay, or should it be finer? <Is fine... where I've seen
this species in the wild, the substrate was about this size> The
current sand bed is 1.5 inches deep. I am moving my tank in about two
weeks, out of the apartment that I live in, and into the house I am
buying. It would be the perfect time to switch sands. Thank you for
taking the time to answer my question. I appreciate it. Joe
<Welcome. Bob Fenner>
Miscategorized fish? Valenciennea
http://www.azgardens.com/brackish_fish.php Hello, <Kiet> I was
browsing this site and noticed that they have Tiger Gobies
(Valenciennea wardii) listed for sale in their brackish fish category.
The product description states that it can be kept in a fresh or
brackish water tank. I have contacted the website owner and was told
these fish are indeed brackish. This is confusing since the link they
provide is to Saltwaterfish.com. Are there any actions that can be
taken to prevent them from selling these fish as brackish? Thank you,
<Mmm, don't know re "actions that can be taken"...
just not buying them for such, from them? I have never encountered
Valenciennea species period other than in full saltwater settings
(reefs, sand flats, mangroves...). And fishbase.org lists Ward's as
I would try re-contacting the company itself... these and other fully
marine species may indeed live for a time in less than full-strength
saltwater, but... I doubt if these gobies do well for long in such
circumstances. Bob Fenner>