Redtail Goodied (Xenotoca eiseni) Aquarium Glaser

Xenotoca eiseni, commonly known as the redtail goodeid, is a small freshwater fish species native to Mexico. It's part of the Goodeidae family, a group of livebearing fishes that are often studied for their unique reproductive biology and conservation concerns.

• Appearance: Males are known for their striking coloration, typically featuring a bright red or orange tail, while females are more subdued in color.
• Size: They usually grow to about 5–7 cm (2–2.75 inches) in length.
• Habitat: They inhabit rivers, streams, and springs in central-western Mexico, particularly in the states of Jalisco and Michoacán.
• Behavior: These fish are livebearers, meaning they give birth to free-swimming young rather than laying eggs.
• Conservation: Many populations of Xenotoca eiseni are under threat due to habitat degradation, pollution, and competition with invasive species. Some local populations may already be extinct in the wild.