Blue Tilapia are survivors.. like Coyotes and wild hogs. I used to be on the lakes 1 or 2 days a week looking for them. I have seen them go up to a bass on bed and push them off of it. Tilapia make a deep bed and cattle farmers hate them. Its been 10 years since I targeted them. 25 years ago I started seeing more and more Armored Catfish (pecostomas?) I put an arrow thru a bunch of them too.