I got some good information today from Bill Lynch Ohio state extension agent and perch producer extraordinaire. (Where I got my original perch stock from).

I was concerned about my perch swimming around and around with the current of the circular tank. I asked him if he has seen this and if it's normal etc. Here is his response:

Cecil,

Yes I have as we have nothing but circular tanks. They will constantly swim in a circle, speed dependent on water volume flow rate and direction. In food fish perch culture swimming is good as it builds fillets and not body fat. Also limits nipping at each other. They swim the fastest right after being put in a tank and then often slow down a little bit once they get to it. But always in a circle.

Bill

Last edited by Cecil Baird1; 01/01/12 11:13 AM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.