i tried this combo and a golf ball sized apple snail now is missing some shell and a large chunk of flesh, not sure who did it but it was either one of the 3 6'' sens, 3 6'' endlis or one of the 4 ropefish(from 8-13'')
They are all over the place now. One is at the FX5 intake strainer grazing on leftover food, another already out of the water, another going around suction cups grazing on the algae and the last is still hiding in the driftwood cave.
I hope I have better luck than you angryinsect, my bichirs are quite tame (I hope)