MinnowSoaker is right. We 'Yanks" from up North call them Rock Bass. They have saved many a day for me when the Bass/Walleye/Crappie/Bluegill's would not bite. My largest ones have always come on a moving lure like a small jig, beatle spin, or small spinnerbait. Shalllow, hard bottom or sand flats at Dawn/Dusk, & just after dark have been the best times for me. If I get into a bunch of them, I break out my 40+ year old rods/reels and have some fun.