No, when I can get them isolated away from BG and predators, can catch them on small nymphs, mealy worms, regular worms, or just about anything.
Today, for example, it didn't work because we couldn't isolate the Tilapia away from the predators. We caught a dozen HSB like the one below in one pond and tons of BG in the other pond. I think the water is still too warm for Tilapia by this technique...but it won't be for long.
