Kechki Maach er Charchari | Small fish like Minnow or white bait cooked with potatoes and eggplant Kechki, Kachki or Kaski is a tiny, shimmering like silver fish that is very commonly found in freshwater ponds, streams and rivers of rural Bengal. They are really tiny, even smaller than the mourala fish.  These small fishes have such soft bones that they are cooked and eaten whole.