Figure 2 in The genus Cotylopus (Teleostei: Gobioidei) endemic to the rivers of islands of the Indian Ocean with description of a new species from Mayotte (Comoros)

Figure 2. Diagrammatic illustration of urogenital papilla in Cotylopus rubripinnis. (a) Male; (b) female. 1, Anus; 2, urogenital papilla; 3, anal fin.