Can oscars live with glowlight tetras?
Verdict
No
No. Oscars and glowlight tetras should not share a tank. An adult oscar eats fish that fit in its mouth, and at 1.5 inches glowlight tetras do.
What to watch
- Deal breakerAn adult oscar eats fish that fit in its mouth, and at 1.5 inches glowlight tetras do.
- Watch outOscars grow to 12 inches and need 75 gallons, far more than a tank set up for glowlight tetras.
What works
- Both are fine at 74–80°F.
- pH 6–7.5 suits both.
Water side by side
Size to scale
Care at a glance
| Oscar | Glowlight tetra | |
|---|---|---|
| Temperature | 74–81 °F | 74–80 °F |
| pH | 6–8 | 6–7.5 |
| Adult size | 12.0 in | 1.5 in |
| Minimum tank | 75 gal | 10 gal |
| Temperament | Semi-aggressive | Peaceful |
| Swims at | Middle | Middle |
| Group | Alone or in pairs | Groups of 6+ |
| Diet | Carnivore | Omnivore |
Better tank mates for oscars
Common plecoYes
Clown loachYes
Black ghost knifeYes
BichirYes
Elephant nose fishYes
Chinese algae eaterYes
Better tank mates for glowlight tetras
All glowlight tetra tank mates
Questions
Can oscars live with glowlight tetras?
No. Oscars and glowlight tetras should not share a tank. An adult oscar eats fish that fit in its mouth, and at 1.5 inches glowlight tetras do.
What temperature suits both oscars and glowlight tetras?
74–80 °F. Oscars need 74–81 °F, glowlight tetras need 74–80 °F.
What size tank do oscars and glowlight tetras need together?
At least 75 gal, set by the oscar. Add space for each extra fish.