I'm a bit astonished that at an age of at least 9 months, the fish is only 10cm in length. Is it eating?
What kind of temperatures has it been exposed to?
Yes, of course it was eating. I feed them blood worms since they are still young as I got them when they were still fry.
Now with this problem it is not eating very well. It’s like it doesn’t have the apatite due to this condition.