I can't say that I've heard of that one...which is odd since I'm into puffers...perhaps it's just one of the names I've never heard *laughs* I've noticed that pet stores aren't afraid to make up a new name for a fish/invert if they've never seen it.
There is nothing wrong with a 38 gallon tank as long as the lion is a dwarf species. Not many species of puffers will be suitable for that small of a tank, however, with the exception of the tobies.