Thursday, June 18, 2015

FISH HEALTH .

Fish should be observed on a regular basis for signs of ill health,stress or any discomfort.This is the main reason why you must master your fish behavior;swimming patterns,feeding and response to stimuli so that any changes will be noticed and addressed. There must be an operational protocol,where the pipe works, pumps and general system are checked for leaks,damage,breaks or blockages . The pond is the controlled environment of the fish,and the health status of the fish is hinged on its stability and balance. Potential problems /deaths in ponds has been traced to biofilters.When nitrogenous wastes accumulate in ponds,they increase ammonia levels in ponds,causing death of microrganism in the biofilters which results in mass death of fish. The water parameters are to be checked at regular intervals as these are indicators of fish health status; dissolved oxygen,temperature,ammonia level,nitrate,nitrite,pH and phosphate are very important. Fish health can be judged good/bad based on observation.When fish are flicking or flashing its an indication of parasitic infestation or high nitrite concentration in water.Fish jumping also indicate parasitic infestation,gill problems or irritating contaminates in water. Rubbing against fish tank/wall is a clear indication of parasitic infestation.Stress is to be suspected when fish are swimming slowly,resting down in the pond and refusal of feed.Mucus covered fish points to stress as well as parasitic infestation Fish gasping for fresh air on water surface,or hanging around water inlet indicate a low level of dissolved oxygen in the pond. Parasitic infection could be by bacteria,fungi or viruses.Parasites could infect or infest the body of fish as in the case of fish lice,which causes severe irritation. When fish is observed with clamped fins,red streaks on skin its indicative of a bacterial infection,while whitish spots on fish giving a cotton-wool appearance is indicative of viral infection,these are usually complicated by secondary bacterial infection. Fish could also show lumps or pox-like lesion as in the case of carp pox,these usually disintegrate leaving ulcers that are also complicated by bacteria.Worms also affect health of fish,tapeworms in fish cause a change in body color resulting in dark-colored fish ,that are weak and swimming with open mouths The anchor worm causes proliferation of muscle. Fish farms must have some materials to facilitate easy management ,ease handling and ensure survival and health of fish.These include nets,water kit,bowl,gloves and indicator paper.

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