OUCH! i wouldn't release them if this is true.....DO NOT release them back to the wild. Tilapia are an invasive species in CA and the law requires their destruction once caught. If you're caught releasing them, you have no proof they were wild-caught in the 1st place. You could be arrested for releasing an invasive species into local waters and that carries extremely heavy fines, legal fees, possible jail time and other major life hassles.