Flounder

Presence of scales on all areas of the head (except nasal area and a very narrow stripe on angle of preopercle in specimens larger than 5 cm SL); absence of a membrane connecting the dorsal, anal and caudal fins; two pelvic fins juxtaposed, enclosed by a single dermal envelope and positioned on the medial ventral line of the body (Ref. 49504).

Dorsal spines (total): 0; Dorsal soft rays (total): 65 - 73; Analspines: 0; Analsoft rays: 46 - 51; Vertebrae: 32 - 35

Apionichthys finis is a species of sole in the family Achiridae. It was described by Carl H. Eigenmann in 1912, originally under the genus Soleonasus. It inhabits the Essequibo, Potaro and Amazon rivers. It reaches a maximum standard length of 8.8 cm (3.5 in).