I have heard someone has on this forum but it wasnt intentional. It is very difficult to breed them and I dont know any tips to help you. The eggs are green
My black kuhlie loaches bred, but I didn't do anything special, and it wasn't intentional. I saw the babies when they were about an inch, I didn't even know about them before that. They looked that same as my other black kuhlies, but they were smaller and their color was a little darker.
In case any of you want to know, they were an inch when I found them, in early February, and in March they were two inches. Now they're about 2-1/2 inches, and the only difference to the adults is the size. Also, they have a whiter belly than the adults.