species

Axolotl

Ambystoma mexicanum

Not actually a fish — a permanently aquatic salamander that retains its larval features (external gills) throughout life. Needs cold water (60-68F), no heater, and fine sand or bare bottom. Color morphs include Wild, Leucistic (white with dark eyes), Albino, Melanoid, GFP (glow under UV), and Copper. Huge personality.