What kind of fish is this?

I don't have any at the moment to take pictures but they are 2-3 inches long and elongated like members of the loach family. They also resemble small fish I've seen wild in Arkansas streams commonly sold in pet shops as "Algae Eaters". They have VERY pronounced vertical, black stripes. We have found them in small creeks of central Kansas and runoff from salt plants around the Hutchinson-Lyons Ks. area. They seem to prefer fast flowing salty water. My Dad called them 'Rifflejacks' but I have found no references by that name.