It's either crans or upland, I'm guessing upland. (We don't have them up north so I never saw the need to find out the difference)
Feeding: Animal heart with the fat cut off, worms, other bugs, bloodworms, raw shrimp and commercial food but not all natives accept it, my smelt and mullet do but the others don't even try it.
Remember to keep it nice and cool, preferably below 20.