Fish Ketoconazole for Aquarium – Trusted Antifungal Formula

Defend your aquarium against fungal threats with Thomas Labs’ Ketoconazole. This antifungal formula targets persistent skin and internal fungal infections in ornamental fish. Suitable for hobbyists and aquaculture use, it's a trusted treatment that delivers fast results.

• Treats common fungal diseases like body fungus and gill rot

• Designed for safe use in display tanks

• Ships quickly from a U.S. provider – no vet visit required

See all of our fish-safe antifungals and antibiotics for complete aquatic care.