Stegastes 3

Related Articles: The family Pomacentridae, the Damselfishes,

/A Diversity of Aquatic Life

Genus Stegastes Damselfishes, part 3

By Bob Fenner

Stegastes leucostictus (Muller & Troschel 1848), the Beau Gregory Damsel. Tropical west Atlantic. To almost three inches in length. Juveniles with blue ocellus that is all on the rear dorsal fin; blue dots on a dark head. A standard in the trade, coming out of the Atlantic though feisty toward other fish livestock. Adult in St. Lucia. Juveniles below in Cozumel.

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Stegastes lividus (Forster 1801), Blunt Snout Gregory. Indo-Pacific; Red Sea, East Africa through to and including the Micronesians. To 13 cm. An aggressive species found in shallow water, feeding on filamentous algae and driving off would-be competitors for food, including divers!

Stegastes marginatus (Jenkins 1901), Hawaiian Gregory. To six inches. Hawaiian endemic. Common in all but high surge zones. Territorial. Feeds on algae, detritus. Kona 2019 pic of juvenile and adult.

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Stegastes nigricans (Lacepede 1802), Dusky Gregory. Indo-Pacific; Red Sea, East Africa through to Lines Islands and Fr. Polynesia. To 14 cm. An aggressive species found in shallow water, feeding on cultured algae and driving off would-be competitors for food, including divers! Fiji 2017. A juv. at right in Fiji (pic by Rob Bray), 2017. Below, adults in Fiji and Fr. Polynesia (2018)

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Stegastes partitus (Poey 1868), the Bicolor Damselfish. Tropical west Atlantic. Front of body dark above, yellow below; rear is white. To two and a half inches in length. Occasionally imported for our use. Not tremendously beautiful looks-wise, but an interesting aquarium species just the same. St. Lucia and Cancun photographs.

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Stegastes pelicieri. Mauritian Gregory. To 14 cm. Feeds on filamentous algae. Distribution restricted to S.E. Africa and Mascarenes. Mauritius 2016

To: part 1, part 2, part 4

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