Can GloFish Danio live with Cardinal Tetra?

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

Quick Summary: Sometimes, but only if the warnings are handled. We evaluated GloFish Danio and Cardinal Tetra for 1 specific conflict codes. Plan for at least 20 gallons.

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Caution, conditional match

Data confidence: high

Verified sources: GloFish care guidance | SeriouslyFish Danio rerio

glofish danio | cardinal tetra | glofish danio | cardinal tetra

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.

Cardinal tetra and harlequin rasbora in a dark planted aquarium
Cardinal tetra and harlequin rasbora in a dark planted aquarium.
GloFish danio swimming under blue retail aquarium lighting
GloFish danio swimming under blue retail aquarium lighting.

Water parameter comparison

GloFish Danio temperature64-78F
Cardinal Tetra temperature75-82F
GloFish Danio pH6.5-8
Cardinal Tetra pH4.5-7.2
GloFish Danio GH5-18 dGH
Cardinal Tetra GH1-8 dGH
Minimum tank20 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.

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