Does anyone know if it is ok to mix BN's with loaches. I'm getting some algae in my tank now. Obviously I have to wait for nitrites to disappear. I've got guppies and neons so far.
Bristle nose is pretty much safe with any fish. Even guppy frys. Most fish (within reasonable size) tends to leave bristle nose alone as well. All in all, they are awesome algae eaters.
As mentioned, BN fits in almost any environment. Few exceptions include huge cichlid tanks where their mouth is bigger than the thickness of BNs, and also small tanks (10g or less) where their waste will completely overwelme.