outofwater
Fish Addict
I had a picture and video of my assassin "eating" a pellet once. After seeing how they operate, I wouldn't consider him a threat to ANY other tank inhabitant that's faster or bigger than him. Only exception to that would be their ability to stalk and coordinate attacks on bigger snails, but while remarkable, that entails having at least 3 of them (assassins) and them being hungry enough to have to coordinate amongst themselves to track and try to gang up on bigger snails instead of their usual way of operating, which is hiding under the substrate (if soft enough, like sand) or standing still on pebbles or gravel substrate to literally latch on to and literally suck the life out of the pest snails