Just for yer knowledge b4 you put those two species together, lions dont tend to do well with puffers. Lions dont give a crap about anything that wont wit in their mouthes, they can carealess, not aggressive in the least bit in that sense. BUT, puffers just LOVE nipping away at poor lions fins. Bad combination. If they are fine in the store, id chance it. Otherwise, id stay away from the combination. And u claim to be an aggressive expert Lionfish12? tsk tsk tsk...:nope: