Black Snakehead
Channa melasoma
Also known as: manu
A compact, nocturnal predator built for dark, acidic forest streams.

About
The black snakehead (Channa melasoma) is one of the smaller members of a family that often gets a bad reputation, and in a well-planned setup it can make a genuinely rewarding aquarium fish even for relative newcomers to the hobby. Native to a broad range stretching from the Mekong basin in Thailand down through Indonesia and the Philippines, it lives naturally in shaded forest streams where the water moves slowly, the substrate is buried under leaf litter and tangled roots, and the pH can dip into strongly acidic territory. Recreating that kind of environment, dim lighting, plenty of cover, soft acidic water, brings out the best in this fish. Like all channids, it possesses a pair of suprabranchial chambers behind the gills that allow it to breathe air directly from the surface, so you will regularly see it rise for a gulp. This also means it tolerates low-oxygen conditions far better than most fish, though a tight-fitting lid is non-negotiable since snakeheads are escape artists. Behavior is primarily nocturnal, and its diet in the wild consists of smaller animals including fish, so tankmates need to be chosen carefully. Dark brown above and pale below, it can be distinguished from the similar C. baramensis by the absence of dark central spots on the body scales and a plain rather than barred tail.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Black Snakehead
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Black Snakehead get?
- The Black Snakehead reaches about 7–12" as an adult.
- What size tank does the Black Snakehead need?
- A minimum of 43 gallons is recommended for the Black Snakehead.
- What water parameters does the Black Snakehead need?
- The Black Snakehead does best with a temperature of 72–90°F, a pH of 4–7, hardness around 1–5 dGH.
- Is the Black Snakehead aggressive?
- The Black Snakehead is aggressive and is best kept alone or with robust tankmates that can hold their own.
- What does the Black Snakehead eat?
- The Black Snakehead is a carnivore. It needs a meaty, protein-rich diet of frozen or live foods.