i have a 40X15m fish pond in which we were raising Tilapia along with gourami, katla and rohu. we used to feed twice a day with pellets. tilapias come together for taking feed and other fishes were found rarely in feeding area. last week one day, no fish came to take the pellets at the time of feeding. we thought some theives may have taken the fish. Next day one rohu and tilapia were found dead. from that day onwards no tilapias were found at the time of feeding and gradually gouramis came to take food.
today i found another tilapia dead. a swelling was found in the anal portion of the dead fish. i have attached the pic of dead fish with this post
is it any disease?
is there any problem raising tilapia with gourami?
the pond is so large so that we havn't changed the water yet. there were more than 50 tilapias.
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