Simpsonichthys rufus
Simpsonichthys rufus Costa, Nielsen & de Luca, 2001
First described in: Costa, W. J. E. M.; Nielsen, D. T. B.; de Luca, A. C. (2001). Quatro novos rivulídeos anuais do gênero Simpsonichthys (Cyprinodontiformes) das bacias dos rios São Francisco e Pardo, Brasil. <em>Aquarium (Brasil).</em> 4(26): 24-31.
Descriptions from checklists and floras indexed by GBIF
description
Description Morphometric data appear in Table 4. Largest specimen examined 33.6 mm SL. Dorsal profile convex from snout 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 head side. Snout blunt. Urogenital papilla cylindrical and short in males, pocket-shaped in females. Tip of dorsal and anal fins pointed in males; dorsal fin rounded to gently pointed and anal fin rounded in females; long filamentous rays on tip of dorsal and anal fins in males, tip reaching posterior half of caudal fin. Dorsal-fin rays unbranched. Caudal fin rounded. Pectoral fins elliptical. Posterior margin of each pectoral fin reaching vertical through base of 6 th anal-fin ray in males, and reaching urogenital papilla in females. Tip of each pelvic fin reaching base of 4 th anal-fin ray in males and 1 st anal-fin ray in females. Pelvic-fin bases in close proximity. Dorsal-fin origin on vertical approximately through anal-fin origin in males, slightly anterior to anal-fin origi
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
diagnosis
Diagnosis Distinguished from all other species of the S. notatus group by having anal-fin origin between pleural ribs of vertebrae 9 and 10 in males (vs. between pleural ribs of vertebrae 7 and 9); also distinguished from all congeners of the S. notatus group by the combination of black blotch on anterocentral portion of each flank absent in males (vs. present) and absence of elongated bright blue and black spots on dorsal-fin base in males (vs. presence).
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
distribution
Distribution Rio do Barro floodplains, middle rio Sao Francisco basin, Estado de Minas Gerais, Brazil (Fig. 1).
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
materials_examined
Material examined Brazil: Estado de Minas Gerais, rio Sao Francisco basin: MZUSP 61234, holotype, male, 30.0 mm SL; MZUSP 61235, 1 paratype; UFRJ 5110, 3 paratypes; UFRJ 5111, 2 paratypes (c & s); UFRJ 5114, 10; temporary pool close to riacho do Barro, Ibiai; D. T. B. Nielsen & N. Nielsen, 9 Feb. 1997. UFRJ 5112, 3 paratypes; UFRJ 511, 4 paratypes (c & s); temporary pool close to the type locality; same collectors and date as holotype.
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
In the stacks
Searching the stacks…
Every page naming Simpsonichthys rufus in the Biodiversity Heritage Library →
From the GBIF Backbone Taxonomy and occurrence records (GBIF.org), with Wikipedia and the Source Library. GBIF species 2349175.