Prognathodes dichrous (Günther, 1869)
Bicolor butterflyfish
Prognathodes dichrous
photo by Tanaka, H.

Family:  Chaetodontidae (Butterflyfishes)
Max. size:  16 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 3 - 120 m
Distribution:  Southeast Atlantic: Saint Helena and Ascension islands.
Diagnosis:  Dorsal spines (total): 12-12; Dorsal soft rays (total): 19-19; Anal spines: 3-3; Anal soft rays: 15-15
Biology:  Occasionally encountered in shallower water in caves or at the bases of overhangs (Ref. 5288). Also occurs on seamounts (Ref. 057925). Usually occur in pairs, which browse over the rocky substratum in search of benthic invertebrates. Unknown to marine aquarium enthusiasts (Ref. 4858). Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).
IUCN Red List Status: Least Concern (LC); Date assessed: 06 October 2009 Ref. (130435)
Threat to humans:  harmless


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