breeding and sexing bristlenose catfish

Question
how do i tell a male bristlenose catfish from a female?
how big do they need to be before they start breeding?

Answer
Hi Becky;

Here are two web pages that should tell you everything you need to know;

http://www.fishprofiles.com/files/profiles/640.htm
http://www.aquarticles.com/articles/breeding/Woods_Bristlenose_Catfish.html

Have fun and good luck with those guys!

At Your Service;
Chris Robbins