I'm upgrading my 30g to a 75g I will move the current residents into the 75 - I have about 8 male guppies and 2 algae eater (SAE or CAE - I can never remember which is which !). I've been eyeing something at the LFS called a "Bosemani Rainbow" but don't know much of anything about it yet. No interest in angels. I prefer smaller fish (in general) - mostly because they're so much cheaper. Tank is planted, and has a paintball CO2 system that's running. Amazon sword, java moss, java fern, ludwiga and polysperma are what I have in it the 30g right now.