Also called the Coolie Loach or Leopard Eel, Kuhli Loaches are native to Indonesia and the Malay Peninsula. These fish tend to inhabit beds of sand in slow rivers and mountain streams. The Kuhli Loach is nocturnal by nature, often hiding during the day and coming out at night to feed. These fish are easily identified by their elongated, eel-like bodies and small fins. Kuhli Loaches typically exhibit ten to fifteen dark, vertical bars with pink or yellowish coloring in between. These fish also have four pairs of barbels near the mouth and the eyes are covered by transparent skin.