Any cool 10 - 15cm fish to put in my tank? They can be loners, aggressive, community, doesn't matter.. Just looking for something new and interesting! Preferably hardy, though.

Any suggestions?

*I've asked before and basically I was recommended small fish.. Please no fish smaller than those lengths. :(

convict cichlid, electric yellow cichlid, a lot of cichlids..

dwarf cichlid, convict, firemouth, african cichlid, rainbowfish

congo tetra
leluepi cichlid
Neolamprologus tretocephalus
calvus cichlid..one of my fav

What is the tank size? You would have to tell us that first.