If i had the space i would go for something like festae, beani, or haitientsis. it seems like theyre hard to keep and breed. i mean i see it bein done but its not as regular as Dovii, jack dempseys etc. If you were able to get something goin with one of these species i think not only would you be very happy but you would also be able to spread those little joys around if you successfully spawned them. I also think Istlanum are a good one too. i hear too many stories of people loosing their females or male and being left with only one not being able to replace the pair