Sunburst Orange GLO Shark (Epalzeorhynchos frenatum)

Same fluorescent-gene technology as every other GLO fish in the shop, just run through a rainbow shark base instead of a tetra or cory — a marker gene from a naturally glowing marine organism that shows up in every cell, turning this one a vivid orange under blue or actinic light. The territorial cave-claiming instinct underneath hasn't changed a bit. Multiples can work, but only in a tank large enough that each fish can stake out its own cave well out of sight of the others — undersize the tank and that territorial streak turns into a permanent border dispute.

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