Bill, I think that is the most unique collection of flies I have seen. You have really matched the hatch for your prey.
On the subject of tilipia I think back to the first time I heard of a tilipia was in the "Progressive Farmer" magazine, a hog farmer was planning on placing tilipia in his runoff collection pond to process the waste from the pigs. If you can figure the pattern out, you might want to try a "Pig Poop" pattern.