We all know how difficult it is to identify the sex of these fish, so please post a picture in here and we'll try to help you (or at least give an educated guess!).
Thanks for your input, this gives me hope. One is always in a cave the other is always under the bogwood although there is plenty of other caves he/she could go into.
Neither look very hairy - just have to wait and see - I still find them very difficult to sex from looking at them.
i see what you are saying laffen, there is always exceptions but females do always tend to be much plumper naturally.
as for this one im still not sure, my initial feeling was male because i can see some long hairs around the gill plates but as smith has already proven females can also be very hairy.... i dont think there is any way to be sure apart from waiting and see what happens.
My Pleco's:
4 x L46
5 x L174
5 x L134
5 x L287
5 x L257
2 x L236