I currently have a 29g tank running. have not added anything as yet, its just water and salt. No substrate nothing. I'm looking for some livestock suggestions. Would like a predator like a fuzzy dwarf lionfish or something of the sort if I can find one but not sure the tank is big enough. The measurements are 76x40x45cm. If its big enough would he have to be a loner or could I add something else with him? If it ain't big enough are there any suggestions as to what else would be cool in a fish only?