Collected from a surge channel cut well back into the shore. Most of the other collections were taken from rocky and coral areas in waters less than 10 m .
Dorsal spines (total): 7; Dorsal soft rays (total): 8 - 9; Anal spines: 1; Anal soft rays: 8. This species is distinguished from its congeners by the following set of characters: complete cephalic sensory-canal pore system (Group I) and dorsal/anal fin-ray formula 9/8. (of the 30 described species of Eviota in Group I, 16 species have this dorsal/anal fin-ray formula); have a distinct dark pigment on the pectoral-fin base (the pectoral-fin base is heavily peppered with small black dots and the pigmentation on the pectoral-fin base is confluent with pigment over the breast); fifth pelvic-fin ray is absent or rudimentary; pectoral-fin rays 16-18, usually 16 .: elongated; Cross section: oval.
Behavioural data for Dark dwarfgoby is currently being reviewed.
Diet information for Dark dwarfgoby is currently being compiled.
Reproduction data for Dark dwarfgoby is currently being compiled.
Marine; pelagic-neritic; depth range 1 - 12 m . Tropical Northwest Pacific: Taiwan.
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