Goldfish Ich Outbreak After Adding a Fair Fish: Emergency Treatment Guide

White Spot Disease: Fast Action Saves Lives

The new fair fish almost certainly introduced Ichthyophthirius multifiliis (ich). Your original fish are now infected—listless, white specks, fading color. Immediate treatment is critical.

Treatment Protocol

1. Raise temperature to 78–80°F (if tank/pond allows) to speed parasite life cycle.
2. Add aquarium salt – 1 tablespoon per 5 gallons (0.1% solution).
3. Dose MelaFix per label for antibacterial support.
4. Apply ich medication containing malachite green/formalin (e.g., Aquarisol, Ich-X). Caution: some medications harm catfish, loaches, and scaleless fish. If your bottom feeder is a catfish, use half-dose or a catfish-safe formula.
5. Consider antibiotics (Maracyn) if secondary bacterial infection is suspected (red streaks, ulcers).

Quarantine Future Additions

Never add new fish directly. Quarantine 2–4 weeks with prophylactic treatment.

Water Quality

Test pH, ammonia, nitrite daily. Perform 25% water changes every 2–3 days during treatment.

With aggressive treatment, most goldfish recover fully within 10–14 days.