Chinese Catfish

The Chinese Catfish is a hardy, air-breathing species native to southern China, Hong Kong, Taiwan, and parts of northern Vietnam. Like other members of its genus, it possesses an accessory respiratory organ that allows it to gulp atmospheric air, enabling survival in shallow, stagnant, or oxygen-poor waters such as rice paddies, ditches, and slow-moving streams where many other fish could not persist. Its elongated, scaleless body and eight sensory barbels are typical of the Clarias catfish, well suited to navigating murky water and soft substrates. Long valued as a food and aquaculture species in its native range, it remains an important component of freshwater ecosystems and traditional pond farming systems across southern China.

• Elongated, cylindrical, scaleless body, dark grey to blackish-brown
• Faint pale speckling or mottling along the flanks, more visible in younger fish
• Broad, flattened head with small eyes
• Eight barbels arranged around the mouth (two long, two short pairs)
• Long-based dorsal and anal fins running much of the body length, no adipose fin
• Similar species: closely resembles other Clarias species such as the walking catfish; distinguished by finer spotting pattern and regional range.

Chinese Catfish inhabit a wide range of shallow freshwater environments across southern China, Hong Kong, Taiwan, and northern Vietnam, including slow streams, ponds, marshes, and flooded rice paddies. Their air-breathing capability allows them to thrive in warm, shallow, and often oxygen-depleted water where seasonal drying or agricultural use limits conditions for many other fish species. They are commonly found in man-made agricultural water systems as well as natural lowland streams and wetlands throughout their native range.

Chinese Catfish are opportunistic omnivores, feeding on small fish, insects, crustaceans, and plant material, foraging mainly at night using their barbels to detect food in murky or turbid water. Their ability to breathe air lets them survive in shallow rice paddies and ditches during dry periods when water levels drop, and they can make brief overland movements between water bodies in wet conditions. Long cultivated in traditional pond aquaculture across southern China, they tolerate crowded conditions and variable water quality well. Spawning typically occurs during warmer months in shallow, vegetated water, with eggs scattered and no extended parental care.