Simpsonichthys suzarti

description

Description Morphometric data appear in Table 1. Largest specimen examined 28.9 mm SL. Dorsal profile weakly concave on head, convex from nape to end of dorsal-fin base, about straight on caudal peduncle. Ventral profile convex from lower jaw to end of anal-fin base, approximately straight on caudal peduncle. Body moderately deep, compressed, greatest body depth at level of pelvic-fin base. Eye positioned on lateral portion of head side. Snout slightly pointed. Urogenital papilla cylindrical and short in males, pocket-shaped in females. Tip of dorsal fin slightly pointed in males, rounded in females. Tip of anal fin rounded in both sexes. Tip of both dorsal and anal fins with short filamentous rays in males, tips reaching vertical through caudal-fin base. Dorsal-fin rays unbranched. Caudal fin rounded. Pectoral fins elliptical. Posterior margin of each pectoral fin reaching vertical through base of 5 th anal-fin ray in males, and through urogenital papilla in females. Tip of each pelvic fin reaching base 4 th anal-fin ray in males and base of 2 nd anal-fin ray in females. Pelvicfin bases medially in close proximity. Dorsal-fin origin on vertical through base of 4 th or 5 th anal-fi

Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).

diagnosis

Diagnosis Distinguished from all other species of Ophthalmolebias in possessing rounded anal fin in males (vs. pointed), reddish brown bars alternated with bright greenish blue bars on whole flank in males (vs. bars, when present, restricted to anterior portion of flanks), dark brown reticulation on dorsal fin in males (vs. reticulated marks absent), and oblique brown bars on anal fin in males (vs. bars absent).

Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).

distribution

Distribution Known only from the type locality, floodplains of lower rio Pardo, Estado da Bahia, northeastern Brazil (Fig. 4).

Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).

materials_examined

Material examined Brazil: Estado da Bahia: MCP 34088, male, holotype, 28.6 mm SL; UFRJ 5810, 1 paratype; UFRJ 5811, 2 paratypes (c & s); temporary pool near Canavieiras, rio Pardo floodplains (approximately 15 ° 45 ’ S 39 ° 00 ’ W; altitude about 4 m); D. B. Lara, 2002.

Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).