Northern Snakehead
Channa argus
Also known as: Ocellated Snakehead
A true apex predator that can survive days out of water. And is banned in many countries.
About
The northern snakehead (Channa argus) is one of the most infamous fish in the freshwater world, and for good reason. Native to a broad range of East Asia, from the Amur River basin south through China to Hainan Island, it has been introduced to Japan and the United States where it has caused serious ecological damage, and ownership is now illegal in both countries, as well as the UK and several others, without an official license. This is a fish built for ambush. In the wild it lies motionless near the bottom, waiting for prey to pass within striking range, and it does most of its hunting around dawn and dusk. Like all channids, it breathes atmospheric air using specialized chambers above the gills, and individuals can survive out of the water for several days under cool conditions. That combination of toughness and predatory efficiency is exactly what makes it such a problem species when released into non-native waters. Physically, it is a long, cylindrical fish with a flattened, snake-like head and muted, blotchy patterning that provides excellent camouflage. In aquarium terms, this species is almost impossible to keep responsibly at home given its eventual size and legal status in most of the hobby's largest markets. It is largely a species for public institutions or very specialist keepers with both the facilities and the permits.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Northern Snakehead
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Northern Snakehead get?
- The Northern Snakehead reaches about 29.5–39.5" as an adult.
- What size tank does the Northern Snakehead need?
- A minimum of 300 gallons is recommended for the Northern Snakehead.
- What water parameters does the Northern Snakehead need?
- The Northern Snakehead does best with a temperature of 40–86°F, a pH of 6–8, hardness around 5–25 dGH.
- Is the Northern Snakehead aggressive?
- The Northern Snakehead is aggressive and is best kept alone or with robust tankmates that can hold their own.
- What does the Northern Snakehead eat?
- The Northern Snakehead is a carnivore. It needs a meaty, protein-rich diet of frozen or live foods.
- How long does the Northern Snakehead live?
- With good care, the Northern Snakehead typically lives 8-12 years.