Absolutely love my 30gal, but had to reduce the population this weekend. I'm down to 1 pygmy angel, 1 scooter blenny and 1 very small hippo (regal) tang. Finding the right fish and fighting the urge to add one more is the biggest problem with small tanks. 1 more fish in a 125gal tank is not as upsetting as 1 more in a 30gal. Good Luck!!