Cosmic Blue GloFish Tetra
The Asians created GloFish® by splicing the genes of zebra danios and hi-fin white skirt tetras and tiger barbs with phosphorescent corals and jellyfish. The fish were patented and licensed for sale in the USA several years ago once the FDA determined them to be safe for the environment. Though these fish do not actually glow in the dark, they are truly fluorescent and will keep that bright color throughout their lifespan.
Quick Facts
| Scientific Name | Gymnocorymbus ternetzi (genetically modified) |
|---|---|
| Origin | Farm-raised (genetically modified) |
| Care Level | Easy, good for beginners |
| Temperament | Peaceful (may display mild curiosity toward other fish) |
FAQ
Are GloFish truly glowing?
GloFish do not glow in the dark as commonly believed. They are fluorescent and display a bright, vivid color under normal lighting conditions, especially in bright or UV-activated environments.
What kind of tank conditions do these fish need?
These fish thrive in a well-maintained aquarium with stable water parameters. A minimum of 10 gallons is recommended, with a temperature between 72-78°F and a neutral pH level.
Are these fish safe for a community tank?
Yes, GloFish are peaceful and suitable for community tanks with similarly sized, non-aggressive fish.
Sarah Berry –
The Cosmic Blue GloFish are vibrant and stand out in the tank. They don’t actually glow, but their color is striking under normal light. Easy to care for and very active. Perfect for a beginner aquarist.
Karen Butler –
I bought a small group of these fish and they’ve been thriving for three months. They stay active and don’t stress other fish. The color is consistent and beautiful.
Tracey Campbell –
Great addition to my freshwater setup. The fish are lively and maintain their bright blue hue even after a few weeks. I appreciate the ease of care and their peaceful nature.