Need a few
A good friend of mine for the first time successfully bred his kribensis. Apparently the females are actually quite vicious, because after doing some research and experimentation he had to buy about 6 other males (his original fish was a female) to add to this tank to start the process. Soon after, the female killed five of them, but paired with the sixth one and then they mated and had very healthy fry and have continued to produce them for him regularly. Previously, he had tried adding 3 males to have her try and pair off with one and she just killed all 3. Don't mess with the momma I guess but figured you should know what your getting into.