I have 4 dwarf neon blue gourami.(1x male, 3 x female). 2 Bolivian rams, 5 julii corydoras, 14 neon tetras and 4 or 5 otocinclus. The Oto’s are shy so not sure if I lost any. All in a 215 litre tank. Looking at putting some fish into a 40 litre I have to get set up and thinking about getting a small pond for over summer to put white cloud minnows in.