Can't tell from the pics. Dou know if they're wild caught or captive bred?
From my readings on prior pfk / mfk posts. Ansorgii are suppose to be slowest growing lower jaw. But then again some have had great success. Personally, I had a 3" CB ansorgii. It had slow growth and girth was skinny. Unfortunately, it got picked on by my ornate at 8" and died.