Simpsonichthys marginatus
Simpsonichthys marginatus Costa & Brasil, 1996
First described in: Costa, W. J. E. M. and G. C. Brasil. (1996). Description d'une nouvelle espèce de poisson annuel du genre Simpsonichthys (Cyprinodontiformes: Rivulidae) du bassin du rio Tocantins, Brésil. <em>Revue française d'Aquariologie Herpétologie.</em> 23 (3/4): 93-95.
Simpsonichthys marginatus is a species of killifish from the family Rivulidae. It is found in the São Francisco River basin, Brazil.
Descriptions from checklists and floras indexed by GBIF
biology_ecology
Habitat Temporary pools within Mata de Galeria in the Cerrado.
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
description
Description Morphometric data appear in Table 7. Largest specimen examined 37.9 mm SL. Dorsal profile slightly concave on head, convex from nape to end of dorsal-fin base, approximately straight on caudal peduncle. Ventral profile convex from lower jaw to end of anal-fin base, nearly straight on caudal peduncle. Body moderately deep, compressed, greatest body depth at level of pelvic-fin base. Eye positioned on dorsal portion of side of head. Snout blunt. Urogenital papilla cylindrical and short in males, pocket-shaped in females. Tip of both dorsal and anal fins pointed in males, rounded in females. Tip of both dorsal and anal fins with filamentous rays in males, tip of dorsal-fin filaments reaching vertical posterior to caudal fin. Caudal fin rounded. Pectoral fins elliptical. Posterior margin of pectoral fins reaching vertical through base of 9 th analfin ray in males, and through base of 5 th anal-fin ray in females. Tip of each pelvic fin reaching between base of 3 rd and 10 th anal-fin ray in males, and between urogenital papilla and base of 6 th anal-fin ray in females. Pelvic-fin bases separated by interspace equal to pelvic-fin base in width. Anal-fin origin on vertical th
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
diagnosis
Diagnosis Differs from all congeners in possessing long pelvic fins in larger males, reaching base of 10 th anal-fin ray (vs. reaching base of most anterior anal-fin ray). Distinguished from all other species of Hypsolebias by having flanks dark red, with blue bars anteriorly and vertical rows of blue dots posteriorly in males (vs. never a similar color pattern).
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
distribution
Distribution Known only from the type locality region, rio dos Patos floodplains, rio Maranhao drainage, rio Tocantins basin, Estado de Goias, central Brazil (Fig. 4).
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
In the stacks
Searching the stacks…
Every page naming Simpsonichthys marginatus in the Biodiversity Heritage Library →
From the GBIF Backbone Taxonomy and occurrence records (GBIF.org), with Wikipedia and the Source Library. GBIF species 2349198.