Mud Minnow Photo Needed - 11 Nov, 2018

Hey everybody,
I have a project that I am doing which requires a photo of a "Mud Minnow".  The kind that can be bought at bait stores and or caught in traps.  I think they are a favorite bait for catching Flounder.  One of the issues I am having when Googling is that there is quite a few varieties that go by Mud Minnow.  One of the confusing parts is the number of anal fins the bait one has.  Some pictures show two with one in front of another.  Plus the coloration's vary quite a bit.  If somebody can post a pic or even a link to the correct Google picture, I would be most appreciative.

Thanks in advance.