GloFish
A variant of Zebra danio (Danio rerio)

Representative Zebra daniophoto — a dedicated image of this exact morph isn't available yet.
The original GloFish — Danio rerio engineered with fluorescent-protein genes (Starfire Red, Electric Green, Cosmic Blue, etc.); fluorescence is genetic and inherited.
Keeper tips for this variant
Fluorescence shows best under blue/actinic LEDs; breeding or reselling them is prohibited by patent, so keep strictly as a display school.