| gambusia quadruncus (cyprinodontiformes: poeciliidae): a new species of mosquitofish from east-central méxico. | gambusia quadruncus n. sp., the llanos mosquitofish, is described from east-central méxico. the region inhabited by the species represents a hotspot of diversity of gambusia, and g. quadruncus sometimes coexists with at least three congeners. the species differs from its closest relative, gambusia affinis, in several characteristics with plausible effects on reproductive isolation, e.g. body size, body and fin morphology, male genital morphology (distal tip of gonopodium) and female anal spot mo ... | 2012 | 23020559 |