Can Goldfish Live With Firefish Goby?
Incompatible pH. Goldfish needs 6.5–7.5, Firefish Goby needs 8.1–8.4.
Parameter Comparison
| Parameter | Goldfish | Firefish Goby | Overlap |
|---|---|---|---|
| Temperature | 65–75°F | 75–80°F | 75–75°F ✓ |
| pH Range | 6.5–7.5 | 8.1–8.4 | No overlap ✗ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 12" | 3" | Size mismatch ✗ |
| Min Tank Size | 20 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| Care Level | beginner | beginner | — |
Species Profiles
Goldfish
Carassius auratus
Goldfish are among the longest-kept ornamental fish, with a history spanning over 1,000 years. Despite their reputation as easy, bowl-dwelling pets, goldfish actually require spacious tanks with strong filtration. They are cold-water fish that should not be kept with tropical species. Common varieties include comets, fantails, orandas, and ryukins.
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 →