Prince has started spending all day and all night sat behind/ontop of his filter. He doesn't come out to the front begging for food when I approach the tank anymore. He used to be extremely active; exploring every inch of the tank. He looks like he might have some fin deterioration but its hard to tell because he's a crowntail. I change 60% of the water, sometimes more, every week. Its a 12 gallon. He doesn't have any tankmates (except some bladder snails). Ppms are 0 ammonia 0 nirite and around 20ppm nitrates at the point of water change. He eats when I drop food infront of him. I treated him for callamanus worms maybe a month ago but other than that he hasn't had any illnesses since I've had it (got him august 1st as an adult) I have no clue what the problem might be.
I can't get a picture of his fins because of where he is and he isn't spreading them out like he used to
Edit: I feed him a small pinch of food once a day and hand feed a few bloodworms sometimes
I can't get a picture of his fins because of where he is and he isn't spreading them out like he used to
Edit: I feed him a small pinch of food once a day and hand feed a few bloodworms sometimes





