I'm afraid I'm not the guy to answer questions about this fish. I think Rainman raised a different type of tilapia, perhaps they were "blue". I had a very, very brief telephone conversation with an Illinois Conservation agent who told me in no uncertain terms that if I stocked them and the state found out they would either drain my pond or poison all of the fish. Since that time I have not openly considered stocking them. Interesting alternative SSS theory tho. The reason the conversation was so brief was because I don't think he reacted too well when I called the Illinois policy backward, stupid, uneducated, or something slightly less flattering.
Bing
"I love living. I have some problems with my life, but living is the best thing they've come up with so far." � Neil Simon,