Page 47 - fish_farms_curriculum

Table 4. (Top) Daily feeding rates of Rainbow trout in relation to weight and temperature.
Table 5. (Top) Daily feeding rates of catfish in relation to weight and temperature.

5.5. Fish Care

Fish care in aquaculture is an important job that needs to be taken care of. Fish and fish tanks
should be checked every morning before feeding, water levels, water inlets and outlets should

be checked, and fish swimming behavior should be observed. In case of death in tanks or
pools is observed, immediate measures should be taken. If there is an unexpected high

mortality rate in the tank or an unexpected swimming behavior in the fish (3-5 deaths per

week is normal depending on the stock density), the weirs should be lowered (water
evacuation should be done), fresh water intake and aeration should be increased. Oxygen

amount, temperature and pH level should be controlled from the water outlet and necessary
precautions should be taken.

If there are bleedings in the body, bleeding in the mouth and head region, and abnormalities in

the fins in the morphological external examination of the dead fish, the fish may be sick. A
fish diseases specialist should be contacted immediately and necessary actions should be

taken.

If there is no problem in the first control in the morning, fish feeding should be started and the
feed should be given to the fish tank little by little and spread out at each feeding, and the

feed-taking behavior of the fish should be observed. Although we need to determine the feed

to be given to the fish as a meal with the calculations made in the fish feeding section and

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