Hey all, like it says in the title; I'd like your opinion on how you can tell if an Endler's line is pure. I got the endler's from a friend and they didn't know if they were pure or not. I started out with about 8 of them, and only put in guppies a few months ago, so I still have plenty of pure offspring from the originals. The only problem is, I don't know if they're pure-bred and the line should be saved.
Thanks!
Thanks!