Hi,I wanted to ask for help this oscar. about 10 days ago ive noticed a whitish patch starting to spread on the tips of his fins. a few days kater a signicant part of the eaten away and then ive quaranteen him and started treatment with kanaplex. He is not eating and the "eating" has reached his body in some places. The water parametres are 0,0,10 and he was in a 250 L tank with a pleco and a feather fish. Any ideas on what is this and how to treat it? thank you
It's fin rot that has been going on for a long time and progressed to body rot. My guess if he's been in with a feather fin is he's been severely and repeatedly nipped at and then the infection has taken hold. He needs strong antibiotics, but may not survive this as it looks very serious.