lions are usually not aggressive at all. They will defend them selfs, thats it. As far as the mouth goes, a full size lion could maybe take out a full size clown. They really are boring fish, that sit around waiting to be hand fed. I would get a less aggressive angel, like a french or blueface... Stay away from queens etc.. They could nip your lion and torture it to death. Angels are known to get nippy especially the big aggressive ones. Everything is going to be trail and error with predators, but there is a percentage to play by. Each fish will have a better % of getting along with another, sometimes specific fish, and sometimes species..savannah_az;4298437; said:ok, my though process of the dwarf lion was smaller fish = smaller mouth = less danger to tankmates. as for the angel if i run across one great if not oh well. im not in a rush to get things in there quick. i just want to plan ahead now so i don't screw myself later. so are some of the larger non to mid agressive fish ok with a lion? foxface, rabbit fish, tang, etc...? anything i should avoid with an angel and/or lion