Chinese Catfish Identification Guide
Identify a Chinese catfish by its long scaleless body, extended anal fin, and pair of long maxillary barbels.
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Key identification features
- Elongated, scaleless body with smooth, slimy skin
- Long anal fin that runs along much of the underside of the body, nearly reaching the tail
- Wide, flattened head with small eyes and a broad mouth
- Two pairs of barbels, including a long maxillary pair extending well past the head
- Uniform dark gray-brown to olive coloring, generally without strong mottling
- No adipose fin, and a small, rounded tail fin relative to body length
Common look-alikes
- Wels catfish: grows much larger and typically shows a more mottled body pattern rather than the uniform coloring of the Chinese catfish
- Other Silurus species: very similar in shape; body size and geographic range are the most practical ways to separate them in the field
Where you'll see one
Chinese catfish are found in rivers, lakes, and reservoirs across East Asia, including China, Korea, Japan, and the Russian Far East, typically staying near the bottom in slow-moving or still water with plenty of cover.
Frequently asked questions
How do I recognize a Chinese catfish?
Look for a long, scaleless, uniformly colored body, a long anal fin running most of its length, and a pair of long maxillary barbels.
How is a Chinese catfish different from a wels catfish?
The Chinese catfish stays smaller and shows more uniform coloring, while the wels catfish grows much larger and often has a mottled pattern.