Reproductive cycle of native viviparous fish species (Actinopterygii: Cyprinodontiformes: Goodeidae) in a subtropical Mexican lake

Abstract Reproductive tactics and strategies contribute to the persistence maintenance of long-term populations in fish species. Members subfamily Goodeinae are a group small-bodied freshwater with specialized reproduction (viviparity-matrotrophy). They found highlands central Mexico, most them endemic. The aim this study was conduct comprehensive investigation evaluate annual reproductive cycle seven species goodeines (splitfins). We carried out our subtropical Lake Zacapu, bi-monthly sampling from May 2019 March 2020. obtain fertility, size at first maturity (L50), sex ratio, gonadosomatic index. Our result shows that have high fertility compared other same aquatic systems also goodein. males mature smaller sizes than females, observed proportion females greater all goodeines. Zacapu two peaks, one spring (April June) another fall (September November). These (fertility rates, period) (viviparity-matrotrophy) favor success environmentally stable lake Mexico.