Fish in inland waters in Kerala get infected widely after flood
Kollam: The fish in the inland waters in the state were found to have affected with diseases after the flood havoc. The authorities assume that the disease was caused by the low salinity of water in backwaters and ponds.
A study conducted by the Kerala University of Fisheries and Ocean Studies (KUFOS) found the disease in inland water fish in Ernakulam and Kollam districts. Epizootic ulcerative syndrome (EUS) that result in ulcers and later erosions on the skin. The disease was confirmed in the Animal Health Laboratory in KUFOS.
The examination was conducted in Vypin of Kochi and Munroe island of Kollam. The disease was detected in fishes like pearl spot (Karimeen), grey mullet (Thirutha), red mullet (Kanambu) and silver mullet (Maalan).
As the infection was reported, samples from various areas in the state were collected and examined and the fish farmers were alerted. More cases of the infection were reported from Munroe island. As flood water got mixed up in the water bodies here, the temperature and salinity of the water was changed.
The farmers are directed to sprinkle lime in ponds to raise its pH value and prevent the disease from spreading. Dolomite can be used in water bodies with more fish in it. Dolomite should be applied in a quantity of 10 kg per acre after mixing it with 250 grams of potassium permanganate, once in every 10 days.
The disease can be prevented by keeping the pH value of water above seven using lime. The farmers have been directed in this regard, said Dr. Devika Pillai, head of Animal Health Laboratory in KUFOS.