Those pictures are of the same bin. I think at most 50-80. Our pond is only at most one acre when at full pool but have rock all away around.

The first year we saw the big ones but now rarely see the big ones but hundreds of yearlings every year.

When we clean perch in the spring of the year they will almost all have a crayfish in them that is about 1.5"s long. I gave the crayfish one year head start and that is all they will need for you. If your going with bass that could be a different story. Bass are crayfish eating machines.

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7/8th of an acre, Perch only pond, Ontario, Canada.