Prognathodes geminus Copus, Pyle, Greene & Randall, 2019
Twin butterflyfish
photo by Pyle, R.L.

Family:  Chaetodontidae (Butterflyfishes)
Max. size:  7.13 cm SL (male/unsexed)
Environment:  demersal; marine; depth range 110 - 150 m
Distribution:  Western Central Pacific: Caroline Is., Palau I.
Diagnosis:  Dorsal spines (total): 13-13; Dorsal soft rays (total): 17-19; Anal spines: 3-3; Anal soft rays: 15-15; Vertebrae: 24-24. This species is distinguished by the following set of characters: D XIII, 17-19; A III,15; head 2.48-2.49 in SL; body depth 1.71-1.76 in SL; length of pelvic-fin spine 4.18-4.46 in SL. Colour of body white with three broad dark brown bands, the first intersecting the eye (Ref. 120553).
Biology:  Occurs in association with limestone outcroppings on steep slopes and the type specimens were collected in an area with broken limestone rubble (Ref. 120553). FishBase common name coined by authors.
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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