Delicate swordtail

The Delicate swordtail lives in the benthopelagic, freshwater, pH range: 7.5 - 8.2, dH range: 5 - 20 environment.

just in delicate swordtails, but in related swordtail speices that descend from a common ancestor that lived a few million years ago. More

The delicate swordtail (Xiphophora cortezi) is particularly prone to getting melanomas (the bottom picture here shows a fish with a tumor in its tail). More

Common names

Cortez-Schwertträger in German (Deutsch)
Cortez' sværddrager in Danish (dansk)
delicate swordtail in English
espada fina in Spanish (español)
Verkkomiekkapyrstö in Finnish (suomen kieli)

Order : Cyprinodontiformes
Family : Poeciliidae
Genus : Xiphophorus
Species : Xiphophorus cortezi
Authority : Rosen, 1960