Long-Fin Electric Green GLO Tetra (Gymnocorymbus ternetzi)

Same heritable fluorescent-protein gene behind every GloFish, originally bred into zebrafish as pollution biosensors before the tech reached the pet trade, just carried here on a long-fin tetra line instead of the standard body. The extended fins trail well past a normal tetra's proportions and add a bit of drag, so keep tankmates equally unhurried. The electric green glow is genetic, not dyed, and holds steady rather than fading.

Care level: Easy · Temperament: Peaceful, shoaling · Max size: ~1.5" · Min tank: 15 gal · Diet: Omnivore, flake/micro-pellet