GloFish Danio

Danio rerio

Animalia›Chordata›Actinopterygii

Variety of Zebra Danio · GloFish

📍 Captive-bred (hybrid)

GloFish Danios are fluorescent variants of the Zebra Danio, available in colors including Starfire Red, Electric Green, Sunburst Orange, Cosmic Blue, Galactic Purple, and Moonrise Pink. They glow brilliantly under blue or UV lighting. As active schooling fish, they share the same hardy, fast-moving nature as their wild-type counterparts and do best in groups of 6 or more.

Size2"

Min Tank10g

School6+

peaceful

Zonetop

Care Guide

Diet

GloFish Danios are omnivorous and thrive on high-quality flake foods and small pellets as their staple diet. Supplement 2-3 times weekly with frozen foods like brine shrimp, daphnia, or bloodworms to enhance coloration and nutrition. Feed small amounts once daily, only what they can consume in 2-3 minutes.

Behavior

Extremely active and energetic schooling fish that dart rapidly throughout the tank, particularly in the upper water column. They are peaceful but may harass slower-moving or long-finned fish due to their high energy levels. Best observed in groups of 6 or more, where they display natural schooling behavior and reduced stress.

Breeding

Breeding GloFish Danios in captivity is possible but requires dedicated setup with fine-leaved plants or spawning mops and slightly warmer water (76-78°F). They are egg-scatterers with no parental care; remove adults after spawning to prevent egg predation. Fry are tiny and require infusoria or liquid fry food initially before graduating to micro pellets.

Tank Mates

Glowlight Tetra

Similar size, peaceful temperament, and compatible water parameters make them ideal companions

excellent

Otocinclus

Peaceful algae eater that occupies different water zones and won't compete with active danios

excellent

Corydoras Duplicareus

Bottom-dwelling catfish that won't interfere with danios' active swimming in upper zones

good

Ramshorn Snail

Peaceful invertebrate that helps with algae control without competing for food or space

excellent

Glowlight Danio

Same genus with identical care requirements and compatible schooling behavior

excellent

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins, rapid breathing, flashing against decorations, lethargy

Treatment

Raise temperature gradually to 28-29°C, perform daily 25% water changes, use aquarium salt (1 tsp per gallon) or commercial ich treatment for 7-10 days

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, fin loss in severe cases

Treatment

Improve water quality with frequent water changes, remove sharp decorations, treat with antibacterial medication if bacterial infection is suspected

Columnaris (Flexibacter columnaris)

Symptoms

Whitish film on body or mouth, loss of appetite, isolation from school, rapid gill movement

Treatment

Increase aeration and perform daily 50% water changes, treat with antibacterial medication, maintain temperature at 24-25°C to slow progression

Velvet Disease (Oodinium pilularis)

Symptoms

Fine golden or rust-colored dust on body, rapid breathing, scratching behavior, clamped fins

Treatment

Dim lighting to reduce parasite reproduction, raise temperature to 28°C, treat with copper-based medication or salt baths following product instructions