I'm wanting to mix a variety of different types of khuli loaches such as the Giant Kuhli Loach (Pangio myersi), black khuli loach (Pangio Oblonga), Leopard Kuhli Loach (Pangio Shelfordi), Striped Kuhli Loach (Pangio Semicincta), and Neon Kuhli Loach (Pangio cf. doriae) in the same tank. My question is: let's say khulis like to be with at least 5 of there own kind, does 5 total within the Pangio genus count or should there be 5 of each species? I ask cause I have limited space and if I need to get 5 of each species then I might have to limit the number of species I get, but if I can get 3 of each species and they'll be happy then that's preferable.