Simpsonichthys fasciatus
Simpsonichthys fasciatus Costa & Brasil, 2006
First described in: Costa, W. J. E. M.; Brasil, G. C. (2006). Three new species of the seasonal killifish genus Simpsonichthys, subgenus Hypsolebias (Teleostei: Cyprinodontiformes: Rivulidae) from the rio Paracatu drainage, rio São Francisco basin, Brazil. <em>Zootaxa.</em> 1244(1), 41-55.
Descriptions from checklists and floras indexed by GBIF
description
Description Morphometric data appear in Table 7. Largest specimen examined 20.0 mm SL. Dorsal profile slightly 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 dorsolateral portion of head side. Snout blunt. Urogenital papilla cylindrical and short in males, pocket-shaped in females. Tip of dorsal fin pointed and tip of anal fin rounded in both sexes; anal fin long, spatula-shaped in females. Short filamentous rays on tip of dorsal fin in males, tip of longest filament reaching vertical through caudal-fin base. Most dorsal-fin rays unbranched. Caudal fin subtruncate in males, rounded in females. Pectoral fins elliptical. Posterior margin of pectoral fins reaching vertical between base of 4 th and 6 th anal-fin s ray in males, through urogenital papilla in females. Tip of each pelvic fin reaching between base of 1 st and 2 nd anal-fin rays in males, reaching urogenital papilla in females. Pelvic-fin bases in contact medially. Dorsal-
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
diagnosis
Diagnosis Similar to S. alternatus and S. delucai and distinguished from all other congeners in having the following combination of characters: anal fin rounded in males (vs. pointed), anal fin elongated, spatula-shaped in females (vs. short, about semicircular), and oblique bars on dorsal fin in males (vs. never a similar color pattern). Simpsonichthys fasciatus differs from S. alternatus and S. delucai in possessing dorsal-fin origin usually just anterior to anal-fin origin, sometimes slightly posterior, in a vertical through base of 2 nd anal-fin ray (vs. dorsal-fin origin in a vertical between base of 3 rd and 5 th anal-fin rays) and a dark gray to black stripe on distal margin of dorsal fin in males (vs. dark red distal stripe).
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
distribution
Distribution Middle rio Preto drainage, itself a part of the rio Paracatu drainage, rio Sao Francisco basin, Unai, Estado de Minas Gerais, Brazil (Fig. 4).
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
materials_examined
Material examined Brazil: Estado de Minas Gerais, rio Paracatu drainage, rio Sao Francisco basin: UFRJ 6339, holotype, male, 19.7 mm SL; UFRJ 6340, 7 paratypes; UFRJ 6341, 4 paratypes (c & s); Brazil: Estado de Minas Gerais: Unai, temporary pool about 2 km from the right bank of rio Preto, rio Paracatu drainage, rio Sao Francisco basin; G. C. Brasil, 15 Apr. 2005. UFRJ 6372, 7 paratypes; MCP 39932, 3 paratypes; UFRJ 6377, 1 paratype; same locality; G. C. Brasil, 14 Feb. 2006.
Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae).
In the stacks
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Every page naming Simpsonichthys fasciatus in the Biodiversity Heritage Library →
From the GBIF Backbone Taxonomy and occurrence records (GBIF.org), with Wikipedia and the Source Library. GBIF species 2349237.