Striped snakehead

Water parameters

Minimum tank: 1000 L per individual at harvest size.

Feed and growth

Feed protein

45% target

Daily feed (warm)

2.00% of body weight

Daily feed (cool)

0.50% of body weight

Max density

60 g per litre

A 3000 g adult eats about 60.0 g of feed per day at optimum. 10 fish at adult size: ~600 g daily.

Legality

Rules vary by jurisdiction and change over time. Verify with your local fisheries or wildlife authority before stocking.

Unlisted jurisdictions default to "check local regulations".

Origin and habitat

A predatory air-breathing fish of the family Channidae, native across South and Southeast Asia from Pakistan and Sri Lanka through Thailand to southern China, the Philippines and beyond. Channa striata is one of the most important food fishes of the region, eaten and used in traditional medicine across Thailand, Vietnam, Cambodia and Indonesia, where its firm, white, nearly boneless flesh is prized. Like other snakeheads it is an obligate air-breather, using a suprabranchial chamber to take atmospheric air, which lets it survive foul water and ride out the dry season buried in damp mud. It grows to about 100 cm and 3 kg, though most fish are far smaller, nearer 30–40 cm. The genus as a whole is a serious invader outside its range: snakeheads established in US waters, including C. striata in Hawaii since the late 1800s and the northern snakehead C. argus on the mainland, have drawn intensive control efforts.

Climate and outdoor ponds

Climate

tropical (needs warm water year-round)

USDA zones

10–13 (winter low around -1°C or warmer)

Heating needed

yes

Cooling needed

no

Care notes

A warm-water predator for tropical aquaponics, mainly relevant in Asia. It grows well in the high 20s Celsius, within a band of about 20–32°C, and reaches roughly 300–600 g in 8 to 12 months on high-protein feed of 40 to 48 percent, with feed conversion near 1.3 to 1.8. Snakeheads are ambush predators that prefer live or fresh prey; pellet training works but has to start with small fingerlings. Their air-breathing is a real asset, letting them shrug off the oxygen crashes that kill other fish, so they can be stocked densely, around {density:20}-{density:40}. They are aggressive and cannibalistic, so strict size grading is essential. The hard limit is legality. In the United States every snakehead species in the family Channidae has been listed as injurious wildlife under the Lacey Act since 2002, barring import and interstate transport, and the entire genus Channa sits on the EU list of invasive alien species of Union concern, which prohibits keeping, breeding, sale and release. Australia and other countries ban them too. Only where they are native or already legal, across tropical Asia, China and parts of Africa, are snakeheads a practical aquaponics fish: there they are productive, hardy and highly valued.

Further reading

• Aquaponics water chemistry: balancing pH for fish and plants
• Fish for aquaponics: tilapia vs everything else