I have two plecs (common) in my 62UKg tank. They are both very bold and active. The larger one of the 2 (6'') seems to graze upside down on dried food with the other fish. Is this a common thing? I've never seen this before.
A few nights ago he swam to the top then turned upside down and swam the length of the tank like it and down to the bottom before twisting back the other way.