This fish was named for its slender, eel-like body which is often brown in coloration. Most specimens exhibit fine, dark spots on the upper half of the body and a faint lateral line running from head to tail. Eel Loaches are native to the islands of Borneo and Sumatra and have also been found in Peninsular Malaysia, Thailand, Cambodia and Vietnam. These fish tend to inhabit shallow, slow-flowing waters such as streams, swamps and backwaters. In their natural environment, Eel Loaches often conceal themselves in mud or sandy substrate.