Hi, I’m happy to introduce myself, I’m new to this site but have had freshwater aquariums for years. I currently have a 20 gallon with 5 harlequin raspboras, 2 otos, a clown pleco and a red male betta. A 29 gallon with approx 20 mollie’s, 2 otos, and a clown pleco. A 45 gallon with 6 fancy guppies, 3 otos and a clown pleco. And a 60 gallon with 6 angels, 9 cardinals, 6 Cory cats and 1 long tail pleco.