would they be alright in a fluval evo 13.5? want a pair or if not them what 2 fish would do alright in there i have a liopropoma rubre that i would like to put in but i think it would be impossible to catch him in my bigger tank he is very shy and don't seem to like all the big fish in my tank so i think the fluval evo 13.5 would be better for him