Antara Mahapatra and Paritosh Biswas
Abstract
Most of the fish diseases are originated from the polluted water. To control the Ulcer disease of the Koi fish (Anabas testudineous), twelve (12) Plant extracts were tried. It is revealed that the treated Koi fishes of the Eucalyptus, Arjun and Muchkunda treated pots were alive up to fifty (50) days. Whereas, the Koi fishes of the Control pot are expired within ten (10) days. Immunity power of the treated Koi fishes of Eucalyptus, Arjun and Muchkunda had been increased in many times by collecting the nutrients from the broth of the pots. These plant extracts are biogenic, biodegradable and least toxic to the Koi fishes as well as to the human beings. These plants are produced locally. Plant extracts are simple, unfixed formulation and can be prepared easily. It is an eco-friendly control measure of the toxic Ulcer disease of the Koi fishes. Eucalyptus is the best performer followed by Arjun and Muchkunda. Plant extract chemicals might have an active role as a fish vaccine substratum in the immunisation mechanism of the treated Koi fishes in their lengthy lives.