I have a fancy goldfish in my 80 litre tank, im a bit worried iv had him over year now.
He spends alot of time at the top of the tank. I dont normally but the tank light on because my room is well lit. But tonigh i decided to but the light on for a few hours as it went dark. I came up to bed to find my goldfish at the top of the tank with what seems to be a blister? Can fish burn from the light ? Or is it becasue he is at the top of the tank. For what i can see he doesnt have his back sticking out of the water and there is a gap between the water and the light of a few inches. I turned the light off immediatly but he is still at the top.
Please help i dont no what to do.