Fish bacterial infection?
My koi carp has swolen and raised fins under his belly, also there are red patches. This looks sore and i am worried. How can i cure this or will the worst happen? Thankyou
Best Answer - Chosen by Voters
It does sound bacterial. Treating with Maracyn Plus usually does the trick.
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Fish Store Owner
Put 'Stress Coat' or some similar treatment in the water and remove anything he could have bruised himself on. If you haven't changed the water in some time then do a part change.
