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(Mmm, right click, add, set as background...) Archive 14

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Ameiurus melas (Rafinesque 1820), the Black Bullhead Catfish. To 62 cm., 3.6 kg, some ten years in age. Cond.s: pH 6.5-8, dH 4-25, temp. 8-30 C. North America; Great Lakes to Mexico. Nocturnal feeders in the wild on insects, fishes, crustaceans, worms, algae. Aquarium photo.

Pterygoplichthys gibbiceps (Kner 1834), the Leopard Pleco. To 50 cm. pH range: 6.0 -- 8.0; dH range: 5 - 19, Tropical, South America: Middle and upper Amazon and Orinoco basins: http://fishbase.org/Summary/SpeciesSummary.php?id=12219
With more than one hundred described species, the genus Hypostomus is the largest of the family. The most commonly imported and cultured aquarium-use "Pleco", Hypostomus plecostomus (Linnaeus 1758) can become attain twenty inches in length. (Image: an aquarium pic of Hypostomus plecostomus).
Otocinclus affinis Steindachner 1877, the Golden Otocinclus, is probably the most commonly imported species (out of southeastern Brazil, near Rio de Janiero). It is brownish grey overall with a darker lateral body band. Not the hardiest oto, this species prefers soft, acidic water. 

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