Cobitidae is a family of freshwater fish commonly known as loaches. They are primarily found in Asia and Europe, inhabiting rivers, streams, and ponds. Loaches are characterized by their elongated bodies, small scales, and barbels around their mouths, which help them forage for food in the substrate. These fish are often bottom-dwellers, feeding on invertebrates and detritus. Many species within the Cobitidae family are popular in the aquarium trade due to their unique behaviors and peaceful nature. Some loaches, like the Clown Loach, are known for their striking colors and social interactions.