As in a badass mean thing to eat them... I would feel bad, otherwise ill find a way to catch those bastards, if not... I saw for sale on some live fish site a mantis thing or something like that... didnt look too scary, but there was warnings all over about not feeding it by hand because it will CRUSH YOU and SLICE YOU OPEN and dont have it in a tank with anything else, because it will CRUSH them too, including corals.... god wtf is this thing? it looked like a bug, a green leafy bug...