Fig. 4 in Descriptive morphology and phylogenetic relationships among species of the Neotropical annual killifish genera Nematolebias and Simpsonichthys (Cyprinodontiformes: Aplocheiloidei: Rivulidae)

Fig. 4. Urogenital region, pelvic and anal fins in Nematolebias and Simpsonichthys. (a) pelvic-fin insertion, ventral view, of N. papilliferus, male, UFRJ 5361; (b) pelvic fin and urogenital papilla, lateral view, of N. papilliferus, male, UFRJ 5361; (c) pelvic fin and urogenital papilla, lateral view, of N. papilliferus, female, UFRJ 5361; (d) pelvic fin and urogenital papilla, lateral view, of S. semiocellatus, male, UFRJ 3933; (e) posterior margin of the anal-fin, lateral view, of S. myersi, female, UFRJ 4760. AF = anal fin; PF = pelvic fin; UP = urogenital papilla. Scale bar 1 mm.