Beach,
No. NO tilapia will survive there, BUT, the cost of tilapia would be far less than what you spend on chemicals to control the plants. It is a yearly stocking program that will increase the overall fish population and health of the lake in many ways---all naturally.
Blue tilapia die at 45 degrees where all other species/hybrids/crosses will die at 55-65 degrees. This would provide for at least a couple extra months of benefit.
The prices for large quantities of fish are greatly reduced and I doubt anyone would offer a price without more information. What did the association spend on chemical plant control last year AND was it useful for the entire lake or only for small areas?
