Albino Rainbow Shark (Epalzeorhynchos frenatum)

Strip the melanin out of a rainbow shark's skin and the fin shape, the size, and — critically — the personality all come along for the ride unchanged. This albino line trades the classic gray-black body for a translucent pink-white wash, but it still claims a cave the second it finds one worth defending and treats every rival with the same territorial shove. Multiples can live together, but only in a tank large enough that each one can hole up in its own cave without a clear sightline to the next — the fix for the aggression here is usually square footage, not luck.

Care level: Easy · Temperament: Semi-aggressive, territorial · Max size: ~6" · Min tank: 30 gal (add tank size for each additional fish kept together) · Diet: Omnivore, sinking pellets/veggies