Thanks for everyone's respones.....I forgot to mention we started fertilizing four years ago and we do it 3 times between March and October. We should probably do it more because we rarely get a plankton bloom and the water stays relatively clear it just gets expensive to do it more than 3 times on that size of a lake. The lake is located south of Brownwood and we never fish for crappie but occasionally catch 1 to 2 pound crappie on plastic worms or crank baits when fishing for bass. We do not have as many catfish as we use to which is fine with me, but there are still plenty and some decent size ones. We have also caught catfish on plastic worms and lizards, caught one on a lizard last year that was 7Ibs. Threadfin might make it out there through a mild winter but it would be close. I checked into stocking them and it won't be cheap to put as many into the lake as they recommended but if it payed off with results I would be willing to spend the money.