I gather that the fins show a difference between the sexes, but i'm not sure how relaible a method this is.
if anyone feels its possible, please have a crack at these for me:
very chunky 114


this is a poor pic, so i apologise, but this one to me has a much larger fin, more like a hi-fin (or of course i could just be imagining it) and its a much more slender fish

lastly is one of my L65 (has been in the wars recently)

so what are all of your thought?
many thanks