Can GloFish Tetra live with Fancy Goldfish?

Troubleshooting community setups: see the compatibility result using temperature, pH, GH/KH, adult size, behavior, schooling needs, and predator/prey rules.

Quick Summary: No, this pairing should usually be avoided. We evaluated GloFish Tetra and Fancy Goldfish for 3 specific conflict codes. Plan for at least 40 gallons.

red

No, avoid this pairing

Data confidence: high

Verified sources: GloFish care guidance | Gymnocorymbus ternetzi overview

glofish tetra | fancy goldfish | glofish tetra | fancy goldfish

Observed photo context

Observed aquarium photo examples

These photos show observed aquarium setups for the selected species. They are useful context, but they do not change the compatibility result or replace tank-size, temperament, group-size, and water-parameter checks.

Pink GloFish tetra in a planted retail aquarium
Pink GloFish tetra in a planted retail aquarium.

Water parameter comparison

GloFish Tetra temperature72-80F
Fancy Goldfish temperature65-74F
GloFish Tetra pH6-7.8
Fancy Goldfish pH7-8.4
GloFish Tetra GH4-18 dGH
Fancy Goldfish GH8-25 dGH
Minimum tank40 gal
Last updated2026-06-11

Confidence: high. Aggression, predator/prey, shrimp risk, schooling, and tank size rules are evaluated from curated freshwater attributes.

Next steps

Check BioloadCalculate if your tank volume and filtration can support this pairing.Find More Tank MatesSee other compatible species and compare more pairings.Water Parameter CheckConfirm that your tap water matches the selected species.

Related profiles