Can Congo Tetra Live With Firefish Goby?
Incompatible pH. Congo Tetra needs 6.0–7.5, Firefish Goby needs 8.1–8.4.
Parameter Comparison
| Parameter | Congo Tetra | Firefish Goby | Overlap |
|---|---|---|---|
| Temperature | 73–82°F | 75–80°F | 75–80°F ✓ |
| pH Range | 6–7.5 | 8.1–8.4 | No overlap ✗ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 3.5" | 3" | Similar ✓ |
| Min Tank Size | 30 gal | 20 gal | 30 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| Care Level | intermediate | beginner | — |
Species Profiles
Congo Tetra
Phenacogrammus interruptus
Congo tetras are the showstoppers of the tetra family. Males develop spectacular flowing fins with an iridescent rainbow sheen that shifts from blue to gold to green under aquarium lighting. They are larger than most tetras (up to 3.5 inches) and need a spacious, well-planted tank to display their full beauty. Peaceful but shy — they thrive with calm tank mates.
Full care guide →Firefish Goby
Nemateleotris magnifica
Firefish gobies are graceful, flame-colored marine fish that hover above the rock work like tiny, living flames. Their elongated dorsal spine and gradient from white to red-orange makes them visually striking. They are peaceful, hardy, and reef-safe, making them ideal for beginner marine aquariums. They require a tight-fitting lid as they are notorious jumpers.
Full care guide →