- Reaction score
- 2 years
So basically, my koi angelfish has been quite lethargic lately. He sits at the back of the tank sort of in the middle of the water but more towards the top. He has never acted like this. I give him 79°F water, a powerful filter, and a variety of live plants. I don’t really see any physical abnormalities in him, but I am no expert. I’ve researched fish TB, NTD, and hexamita. None of these seem likely but I really need help because I love my fish.