A common native species, widespread around hillstreams of Hong Kong.
A very cryptic nocturnal species, rarely found during the day. Often seen darting across nooks and crannies in hillstreams at night.
Identification: "Long and scaleless body with a large broad flat head; huge mouth surrounded by 3 pairs of fleshy barbels, upper jaw barbels are elongated; dorsal fin is small and soft while the anal fin is extremely long terminating near the truncated caudal fin; dark brown body marked with dark spots of varying sizes" (AFCD)
AFCD: North District, Tai Po, Tsuen Wan, Sai Kung, and on Lantau Island. Common.
Personal experience: A common species, easily seen in great abundance in most hillstreams at night.