Fish Gathering In Corner Of Tank?

★Eric☆

New member
I have a 50 gallon fish tank with angelfish and a few other tropical fish compatiable with angels as well as plecos.

For some reason all of the fish are gathering in one corner of the tank. Not sure if this has anything to do with it but the corner they are in is also very close to my heater...

My home is pretty warm and the tank is in a warm area.

I live in ky and the temp right now is 55. The tank temp is around 75.

The tank has not new, no new fish have been added and the only recent change was about a month ago I took all the rock out and put sand in the bottom.

I am considering going back to rock btw.

Any clue as to why they are gathering in the bottom corner?

Thanks.
 
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