Can koi live with glass catfish?
Verdict
No
No. Koi and glass catfish should not share a tank. Koi are coldwater animals (59–77°F); glass catfish need 75–80°F. They overlap only at 75–77°F, the edge of both ranges.
What to watch
- Deal breakerKoi are coldwater animals (59–77°F); glass catfish need 75–80°F. They overlap only at 75–77°F, the edge of both ranges.
- Watch outAt 24 inches a koi can swallow a small glass catfish. Fast, alert fish usually stay out of reach.
What works
- pH 7–7.5 suits both.
Water side by side
Size to scale
Care at a glance
| Koi | Glass catfish | |
|---|---|---|
| Temperature | 59–77 °F | 75–80 °F |
| pH | 7–8.5 | 6.5–7.5 |
| Adult size | 24.0 in | 3.0 in |
| Minimum tank | Pond | 30 gal |
| Temperament | Peaceful | Peaceful |
| Swims at | All levels | Middle |
| Group | Groups of 3+ | Groups of 6+ |
| Diet | Omnivore | Carnivore |
Better tank mates for koi
Better tank mates for glass catfish
Questions
Can koi live with glass catfish?
No. Koi and glass catfish should not share a tank. Koi are coldwater animals (59–77°F); glass catfish need 75–80°F. They overlap only at 75–77°F, the edge of both ranges.
What temperature suits both koi and glass catfish?
75–77 °F. Koi need 59–77 °F, glass catfish need 75–80 °F.
What size tank do koi and glass catfish need together?
A pond. Koi outgrow indoor tanks.