I love that Eastern Mudminnow!!!!
(Please post up a thread about them as I have some husbandry and behavior questions for you !!!)
I haven't really kept one yet. I had some small ones earlier this year that ended up being eaten by something else in the tank. I collected a few more for some members and this one is actually one of them. I never had the right tank setup to keep one, but I will setup one soon and get a few for myself. I will have a "backwater" tank for banded+bluespotted sunfish, eastern mudminnows, and swamp darters (if I can find them). We also sample redfin pickerel, warmouth, and pirate perch in the same waters but they obviously get too large and will eat the others.