Great to see this is still working. How big is he now? I am waiting for one of mine te reach a suitable size and I will try the same. I really like rummy nose tetra's so will try a massive group of them.
it still picks them off every now and then but i just add more the aimara is 25" not really getting longer just thicker. I tried with other large fish like pacus but never worked out so now it's just the aimara and the tetras