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Is neem oil safe for fish? What natural remedies treat fish diseases?

Updated On September 23rd, 2025

Neem Tree's leaves and its parts like bark or neem water ( boiling neem leaves in some water ) can treat aquarium fish health problems like fungus , fin rot , Itch , and other parasitic worms and infection ? if yes then how to treat herbal medication for my aquarium fish and it's Ecosytem of water ? I was some fresh neem leaves drops with messing them and drop into the aquarium but not any toxic side effects to fish ....but I want to know that what is herbal medication for aquarium fish ?

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on June 30th, 2019

Neem oil. An be toxic to fish if used in sufficient quantities. There are safer, more effective "natural" remedies. Melafix (contains melaleuca oil) or Pimafix (contains Bay Rum oil) are two products that can be used to treat infection in fish. Indian almond tree leaves can be used to reduce the pH of water. Plain aquarium salt can be used as a general tonic to reduce stress, improve gill function, treat minor infection and aid in recovery but some fish, especially scaleless species, are not salt tolerant, so care must be taken. The best way to keep fish healthy and to treat infection is to maintain pristine water quality via filtration and regular maintenance. Do not overfeed, limit light exposure and monitor temps and chemistry closely.

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