It is doubtful that it will touch the nem. What i would consider is how you are going to feed the fish after the aptaisa is gone? You will need to feed it very often as these fish need 2 - 3 feedings daily, and they will not accept flakes/pellets. I feed mine a mixture of mashed up fresh shrimp squid scallops a bunch of other seafood, and i mix in flakes and seaweed when i blend it, my copperband loves it. Though i had to put it in its own tank for a long while trying to get it to eat. Did not eat that mix in the beginning, mosquito larvae triggered the initial appetite. Hope this helps, they are beautiful fish, but not the easiest to care for. If it is just for aptaisa, i would recommend a much cheaper and "hands off" route of peppermint shrimp, 2 peppermint shrimp took care of all my aptaisa in my 90 gallon tank.