Diagnostic Description
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Inglês
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fornecido por CoralReefFish
Diagnosis: Damselfishes with 12 dorsal-fin spines and a mode of 15-16 dorsal-fin soft rays indicate Stegastes and Microspathodon chrysurus. Fin-ray counts broadly overlap among Stegastes with most species having 13-14 soft anal-fin rays and 18-20 pectoral-fin rays (S. adustus and M. chrysurus have a mode of 21 pectoral-fin rays). Given this overlap, it is likely that pre-transitional larvae will require DNA sequencing to reliably distinguish the species.
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Diagnostic Description
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Inglês
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fornecido por Fishbase
Exhibits geographic color variations (Ref. 7247). Body dark in front, becoming abruptly yellow between last dorsal spine and anal fin origin (Ref. 26938).
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Life Cycle
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Inglês
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fornecido por Fishbase
Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205). This species has a juvenile bisexual condition and a typical gonochore testis (Ref. 103751).
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Morphology
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Inglês
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fornecido por Fishbase
Dorsal spines (total): 12; Dorsal soft rays (total): 14 - 17; Analspines: 2; Analsoft rays: 13 - 15
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Trophic Strategy
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Inglês
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fornecido por Fishbase
Inhabits shallow coral reefs and isolated patch reefs in deeper water. Feeds primarily on algae but also on polychaetes, hydroids, copepods and ascidians (Ref. 9626). Aggressively territorial but only around a small area (Ref. 9710). Taken incidentally in traps and small-meshed beach nets (Ref. 5217). Territorial herbivore (Ref. 57616).
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Biology
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Inglês
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fornecido por Fishbase
Adults inhabit shallow coral reefs and isolated patch reefs in deeper water. Feed primarily on algae but also on polychaetes, hydroids, copepods and ascidians (Ref. 9626). Aggressively territorial but only around a small area (Ref. 9710). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205). Taken incidentally in traps and small-meshed beach nets (Ref. 5217).
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Importance
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Inglês
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fornecido por Fishbase
aquarium: commercial
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Stegastes partitus
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Inglês
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fornecido por wikipedia EN
Stegastes partitus or the bicolor damselfish is a species of bony fish in the family Pomacentridae found near the sea bed on shallow rocky and coral reefs in the Caribbean Sea, the Gulf of Mexico and off the coasts of Florida.[3]
Description
A bicolor damselfish in
Belize
The bicolor damselfish can grow to about 10 cm (3.9 in). The head and the front half of the body are dark grey or black and the rear half is pale, usually with some yellow, with regional variations in the coloring. The large dorsal fin has 12 spines and 14-17 soft rays. The anal fin is also large and has two spines and 13-15 soft rays.[3]
Behaviour
Unlike most other members of the genus Stegastes which eat filamentous algae, the bicolor damselfish feeds on plankton. It forms loose groups of up to twenty individuals and defends a territory over a rocky reef with plenty of crevices in which to lurk.[4]
References
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Stegastes partitus: Brief Summary
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Inglês
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fornecido por wikipedia EN
Stegastes partitus or the bicolor damselfish is a species of bony fish in the family Pomacentridae found near the sea bed on shallow rocky and coral reefs in the Caribbean Sea, the Gulf of Mexico and off the coasts of Florida.
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