How did you find this out? It is very interesting...shows me that you really care for your fish. From the pictures you have posted of Little Mo (and Big Mo) and the first hand accounts I have read from you...I would love to have some (got my guy at the LFS keeping his eye out for some for me!)
My dad was examining pictures of big and little mo, and the two of them looked so different he started searching through some websites, and he showed me a picture of M. clivicola, and we agreed that this was little mo's actual species It does't change my opinion on him though, all mogurnda gudgeons rule!