> I have a pair of unknown apisto male has a mouth like a cacatuoides,tall > dorsal topped with bright red both have a lyretail with long spikes help > please? At a guess they could be A.bitaeniata (many other species would fit the bill also). Is there a red coloured band along the top of the fish just below the dorsal fin, this is a feature of bitaeniata? Is there any colour/bands in the tail? I would think though you have two males rather than a pair. I don't know any species where the females have a lyretai, although I could be wrong. Good luck, Ken.