They can also live with danios, loaches, plecos, rasboras, and gouramis. It contains the "typical spiny loaches", including the well-known spined loach of Europe. Kuhli loaches are scavengers, so they will eat anything that reaches the bottom. Many popular aquarium fish such as goldfish and loaches have these structures. Cypriniformes includes carps, minnows, loaches and relatives. Cypriniformes is an order of ray-finned fish, including the carps, minnows, loaches, and relatives. Loaches are fishes of the superfamily Cobitoidea. Several species of pufferfish and loaches are molluscivores. Loaches, trahiras, and many catfish breathe by passing air through the gut. Like many other loaches, pond loaches are slender and eel-like. Loaches are popular in the aquarium trade. Clown loaches are particularly susceptible to Ichthyophthirius (ich), or white spot disease. Clown loaches are native to the islands of Sumatra and Borneo in Indonesia. However, many loaches are eel-like or conversely, quite stout-bodied; some balitorids have large, visible scales. The endemic fish are all cyprinids or stone loaches.