DISEASES OF FISH AND THEIR CONTROL
The tremendous growth in fish farming activity in Punjab has highlighted various issues...
In fish farms the fishes are densely stocked and thus are more susceptible...
All culturable fish species, Labeo rohita, Cirrhinus mrigala, Catla catla, Hypophthalmichthys molitrix and Ctenopharyngodon idella are affected...
Some commonly occurring fish diseases, predators and their control is given as under:
Abdominal Dropsy
This is the most common and important bacterial disease...
Fin Rot
This is also a bacterial disease of cultured carps...
Lernaeasis
This is an ectoparasitic infection in fish...
Saprolegniasis
This is a fungal infection commonly found...
Anoxia
Depletion of oxygen in fish pond is called anoxia...
Fish Predators
In fish farms there are some predators which prey on fish...
Insects: Water beetle, water bugs and water scorpion attack fish eggs and fry...
Amphibians: Frogs and toads prey on fish fry and fish...
Reptiles: Tortoises and snakes also eat fish...
Birds: King fisher, fishing eagle and heron prey on fish...
Carnivorous Fish: Species like Mystus, Wallago, Channa prey on farmed fish...
Mammals: Water rats and otters eat fish and destroy feed...