More info
Datasheet
| Minimum Tank Size | 10000 litres / 2641.72 US gallons |
| Maximum Size | 85.0cm / 33.46inches |
| Temperature | 0°C / 32.00°F - 30°C / 86.00°F |
| Hardness | 5.04dgH / 90ppm - 25.04dgH / 447ppm |
| pH | 6.0-8.0 |
General Description
The Northern Snakehead, scientifically known as Channa Argus, belongs to the Channidae family under the Perciformes order. It is characterized by having a pelvics fins present, a narrow head with small dorsal and lateral scales, 47-50 dorsal fin rays, and 31-36 anal fin rays. This species is commonly referred to as "snakeheads" due to the large scales on their heads, reminiscent of snake scales.
Aquarium Setup
In captivity, the Northern Snakehead requires a tank size of at least 10,000 liters. The setup should include surface cover like floating or overhanging vegetation or branches. A tightly-fitting cover is essential as these fish are known for their escape abilities, and a gap between the cover and water surface should be maintained for access to a humid air layer.
Behaviour
The Northern Snakehead is known to be an obligate predator, feeding on smaller fishes, amphibians, crustaceans, and invertebrates in its natural habitat. In aquariums, they adapt well to dead alternatives for feeding. They possess supplementary breathing apparatus in the form of paired suprabranchial chambers, allowing them to breathe atmospheric air and survive in hypoxic conditions.
Feeding and Diet
Young Northern Snakeheads can be fed chironomid larvae, small earthworms, and chopped prawns, while adults accept fish flesh, whole prawns, mussels, and larger earthworms. It is advised not to feed them mammalian or avian meat, as it can lead to health issues. Feeder fish are not recommended as they may introduce parasites or diseases unless properly conditioned.
Reproduction & Dimorphism
Reproduction of the Northern Snakehead is unrecorded in aquariums but occurs naturally in late spring to early summer. The species exhibit sexual dimorphism but further details specific to captive breeding are limited. Large-scale outdoor aquaculture projects in China have successfully bred this species.
Habitat and Distribution
Native to the lower Yellow and Yangtze river systems in eastern China, the Northern Snakehead also inhabits the Amur drainage in southeastern Russia and various rivers in the Korean peninsula. Introduced populations can be found in Japan, the United States, central Asia, and parts of eastern Europe. They typically avoid very fast-flowing waters but are generalists in habitat, capable of tolerating hypoxic conditions.