Well I figure if I stick to the two species (Thorichthys and Cryptoheros) then I could breed and learn about them. Also I could make a little money off them if they were to ever happen to breed. With my Panaque's there is no hope on breeding them considering there eventual size being 18"+ I could try breeding my Pseuda's eventually and maybe even my small Panaque's but the bigger growing ones I got to part with soon.