Malachite Green

Substance monograph for the dye malachite green. Regulatory sources concern identified formulations, often combined with other actives; efficacy and safety do not automatically transfer to the isolated substance.

Some ornamental products include malachite green in combination for specified ectoparasites such as Ichthyophthirius. This monograph does not assign a universal spectrum to the isolated substance: identify the agent and verify the exact product label.

Confirm host, diagnosis, net volume, water quality and exact formulation before use. Do not transfer directions between products.

The FDA Faunamor sheet documents a specific combination for ornamental fish, not a universal malachite-green dose or indication. Status depends on country, product and food-use designation.

Do not use in food fish unless expressly authorized: FDA states that malachite green and leucomalachite green are not permitted in US food aquaculture. Salt, purity and host change the risk; follow label PPE and disposal instructions.

Do not use in food fish unless expressly authorized: FDA states that malachite green and leucomalachite green are not permitted in US food aquaculture. Salt, purity and host change the risk; follow label PPE and disposal instructions.

Do not use in food fish unless expressly authorized: FDA states that malachite green and leucomalachite green are not permitted in US food aquaculture. Salt, purity and host change the risk; follow label PPE and disposal instructions.

The FDA Faunamor sheet documents a specific combination for ornamental fish, not a universal malachite-green dose or indication. Status depends on country, product and food-use designation.

Check authorisation, prescription status and conditions of use in the user’s jurisdiction; ornamental and food-producing animals are not interchangeable.

Manufacturer directions document only the stated formulation. Efficacy, safety and dosage do not automatically extend to the active substance or other products.