Our pond was just a little bigger. On the shallow end it was around 6 foot winter pool. On the deep end it was around 10 foot winter pool.
We had bream, bass, crappie and some (few) catfish in it. 75 a year wouldn't start the number kept out of this pond each year. We fertilized it and also fed them with the floating fish food a couple of times a week.
It was nothing to catch and release over a 100 bream in the evening with 2 people fishing.
I caught several bass over 5 pounds out of it. 3 that were over 9 and my grandfather caught one 10 1/2 the last year he fished.
While I kept the larger bass I caught usually, we returned all the fish that were probably 6 and under... and it was full of them.
You will be amazed at what a little food and fertilizer can do to a pond around an acre.
Plus if you get to feeding them the floating food, and do it in the same area, you will get a good count of what kind of numbers you have. The water will look like it boiling from the fish coming up to eat once they realize what your doing every other day. Just remember, too much food is not good.
Making good or having good cover for them to raise and stay away from what eats them, makes a big difference.