Minocycline for Fish (Fish Mino)
Quick answerMinocycline is a tetracycline antibiotic that has long been used by aquarists for internal gram-negative infections. It is the active ingredient in some well-known hobby medications. Broad-spectrum with good activity against many gram-negative bacteria.
What minocycline is commonly used for
- Dropsy and pinecone scales caused by bacteria
- Popeye linked to bacterial infection
- Internal gram-negative infections
Things to know
- Treat in a hospital tank; tetracyclines can disturb biofilters.
- Not effective against parasites or fungi.
- Fish that have stopped eating may not take medicated food, so water-borne treatment is usually used.
How it compares with other options
Minocycline 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 minocycline
Minocycline FAQ
Can minocycline help with dropsy?
When dropsy is caused by a bacterial infection, a systemic antibiotic such as minocycline is one option keepers use. Dropsy is a symptom of organ trouble, so outcomes vary and early action matters.
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.