Goodeidae

Redtail Splitfin

Xenotoca eiseni

Six Centimeters Goodeid Fish from Mexican Waters

• Red
• Temperate
• Regional distribution
• Freshwater fish
• Central America and the Caribbean
• North America
• Small
• Temperate fish

The redtail splitfin or redtail goodeid (Xenotoca eiseni) is a species of goodeid fish from the family Goodeidae and subfamily Goodeinae. Like other members of Goodeinae, the redtail splitfin is native to Mexico and a livebearer. However, the goodeid mating system differs in several ways from the more common livebearing fish from the family Poeciliidae that includes guppies and swordtails.