How Can You Tell A Female Swordtail?
Telling Males From Females Only male swordtails have the tail fin extension. Females have a rounded tail fin Females’ bodies are also more rounded, fuller and about one-half-inch longer at maturity. Do female swordtails have swords? swordtail fish exhibit a striking sexual dimorphism in the structure of the caudal fin; males have a colourful, elongated … Read more