Hey Rainman,

CJBS2003 is right on the money with his ID of your gambusia. If you have a puddle here you will have gambusia in it. They are very prolific reproducers. Dont know about cold tolerance. They must be elusive because they seem to hang around even in a pond full of game fish. Congrats on the tilapia. I wish our fish and game could realize the advantages of this incredible fish.

Bob G