i think a pair of eclipse cats (indian sun cats) would be great. i have a pair in my 130. i got them from wal-mart (yeah, i disgust me too) about a year ago when they were about an inch long and raised them in a 55 and then moved them into my 130 when they hit about 8". from what ive read they grow to about 15-20" and theyre one of the most butiful cats IMHO.