Erythromycin for Fish (Fish Erythro)
Quick answerErythromycin is a macrolide antibiotic that stops bacteria from making proteins. It is available as a powder packet that dissolves quickly in water. Primarily gram-positive bacteria.
What erythromycin is commonly used for
- Mild external bacterial infections
- Gram-positive skin and fin problems
Things to know
- Single-use packets make measuring simple.
- Not effective against parasites or fungi.
- Treat in a hospital tank where possible.
How it compares with other options
Erythromycin is one of several classes of antibiotic used by keepers. Our comparison guide lays out which class suits which problem, and our treatment packs combine complementary classes so you have a backup ready.
Products containing erythromycin
Erythromycin FAQ
Why is Fish Erythro sold in packets?
Each packet is a measured dose, which removes guesswork and dissolves readily in aquarium water.
Responsible use. For ornamental aquarium fish only. Not for human use or fish intended for food. Follow the label and consult a veterinarian when unsure.