🐟 Starfire Red GloFish Tetra (Gymnocorymbus ternetzi (GloFish genetically modified variety))
A Vivid, Fiery-Red Fluorescent Body • A Permanent, Inherited Glow, Not Dye or Paint • Glows Brightly Under Blue or Actinic Lighting
 
📋 The Starfire Red GloFish Tetra has a vivid, fiery-red fluorescent body, a bold, eye-catching colour bred from the classic Black Skirt Tetra.
This vivid colouration comes from a stable, inherited fluorescent protein gene, a real, permanent genetic trait passed down through the GloFish breeding line, not a dye, paint, or injection. The colour is genetic and lifelong, never fading or washing out, and glows especially brightly under blue or actinic aquarium lighting.
It comes from the same captive-bred lines as the standard Black Skirt Tetra, originally native to the Paraguay River basin in South America. Every Starfire Red GloFish Tetra we ship is feeding well.
This is a hardy, beginner-friendly species that can show some fin-nipping tendencies in very small groups, so a proper school of 6-10 or more keeps this behaviour spread out. Its fiery-red colouration stands out beautifully against dark substrate and glows especially brightly under blue or actinic lighting. It reaches 5-6cm, so a 75L tank suits a school well.
 
💡 Highlights
🔴 Vivid Fiery-Red Colour: A bold, eye-catching shade in the GloFish range
🧬 Genetically Fluorescent, Not Dyed: A permanent, inherited trait that never fades
💡 Glows Under Blue Light: Especially striking under actinic aquarium lighting
👥 Best in a Real School: 6-10 or more reduces fin-nipping tendencies
🧠 Beginner Friendly: Hardy and easy to care for