ha ha -sorry, thought you were trying to tell two fish appart! I guess there undersides vary a bit depending on if they need a poo? I dont think they look very different - however no idea of the sex!!
hummm... I think male as it looks like my common, BUT I heard different species are sexed different, so.... Hopefully someone who knows for sure will comment.
Ok, cheers. We will go with male then. If it was female, I'd maybe have searched a little for a male, but I think looking for a female round here will be like looking for a needle in a very big haystack! :thumbup: