The fish was brought into the tank on Sunday, it ate a bit on the day and then it hasnt eaten since. It developed the white marks on its body on Monday, then today those marks appear darker in color. He is swimming around the tank but it's not eating and im worried about those marks. I have tried feeding him Tetrafin Algae Flakes, Tetrafin Marin Flakes, Tetrafin Marine pellets, Brine shrimp.
I'm going to try lettuce or seaweed next... I'm hoping that it can eat and fatten up.. All the other fish are eating well with no bodily damage.
The tang's fins arent damaged in anyway.
Water quality -
Ammonia - 0
Ph - 8.4
Nitrite - 0
Nitrate - 10 ppm
Calcium - 400ppm
Is there any medicine that I should give it? Last night I put in Melafix, hopefully it can destress and bounce back!
Thanks for replying reefrash!