Channa asiatica 6-7 cm | Chinese Snakehead

Overview

Channa asiatica, commonly known as the Chinese snakehead, is a fascinating predatory freshwater fish prized by experienced aquarists for its intelligence, bold behaviour and distinctive appearance. At 6–7 cm, this juvenile is still small, but it will grow into a powerful, territorial fish with a strong feeding response and plenty of character. This is not a community fish in the usual sense; it is best appreciated in a carefully planned species setup or with very robust tank mates in suitably large aquaria.

With its elongated body, broad head and attractive mottled patterning, Channa asiatica makes a dramatic display fish. It is also an air-breathing species, meaning it can gulp atmospheric oxygen when needed, which helps it cope with lower-oxygen conditions than many other fish. That said, it still thrives best in clean, well-maintained water with stable parameters and plenty of cover.

We offer healthy, carefully acclimatised stock with fast UK delivery and a live arrival guarantee, so your new fish arrives in the best possible condition. Because this species is a predator and can be territorial, please ensure you have a secure lid and an appropriate setup before ordering.

Care at a Glance

Origin & Natural Habitat

Channa asiatica is native to southern China and parts of neighbouring regions, where it inhabits slow-moving rivers, canals, ditches, ponds and marshy waters. In the wild, it is often found in heavily vegetated areas with soft substrates, submerged roots and plenty of hiding places. These habitats can be warm, shallow and oxygen-poor, which is one reason snakeheads are such adaptable survivors.

Understanding the natural habitat is key to successful long-term care. This species prefers calm water, subdued lighting and a layout that offers security. Dense planting, driftwood, caves and leaf litter all help recreate the sheltered environments it would naturally use for ambush hunting and resting. Although hardy, it should not be kept in poor water quality; regular maintenance is essential for health and colour.

Tank Setup & Water Parameters

A secure, escape-proof aquarium is absolutely essential. Snakeheads are strong, inquisitive and capable of jumping, especially when startled. A tight-fitting lid with no gaps is a must. For a single adult, a tank of at least 250 litres is recommended, with a longer footprint being more useful than height. More space is always better, particularly if you plan to keep a pair or attempt a carefully managed breeding setup.

Use a soft, natural aquascape with plenty of cover. Good options include bogwood, rockwork arranged securely, caves, PVC shelters hidden among decor, and robust plants such as Java fern, Anubias and floating species. Floating cover can help reduce stress by dimming the light and making the fish feel secure. Gentle filtration is ideal, but the system should still provide excellent biological capacity and regular water movement without creating excessive current.

Keep the water temperature between 20 and 26°C, with stable conditions being more important than chasing a precise number. A pH of 6.0 to 7.5 is suitable, and soft to moderately hard water is generally acceptable. Ammonia and nitrite must always remain at zero, and nitrate should be kept low through routine water changes. Because this species is a carnivore and can be messy at feeding time, good filtration and maintenance are especially important.

When introducing a new fish, dim the lights and allow it time to settle. Newly imported snakeheads may be shy at first, but once comfortable they often become confident and highly responsive to feeding. Avoid sudden changes in temperature or water chemistry, and never house this species in an uncovered aquarium.

Feeding Guide

Channa asiatica is a carnivorous predator with a strong appetite. In the aquarium, it should be offered a varied diet of high-quality meaty foods. Suitable options include frozen bloodworm, krill, mysis, chopped prawns, mussel, lancefish and other marine or freshwater meaty items. Many individuals will also accept sinking carnivore pellets or sticks once settled, which is useful for balanced nutrition.

Young fish may feed more frequently, while adults can usually be fed every 2–4 days depending on size, temperature and body condition. Overfeeding should be avoided, as snakeheads can become overweight if offered too much rich food. Variety is important: relying on a single food source is not ideal for long-term health. If feeding live foods, ensure they are from a reputable source to reduce the risk of parasites or disease.

Because this species is a predator, it may strike at anything that fits into its mouth. Feed with care and never assume tank mates are safe simply because they are active or fast. Remove uneaten food promptly to maintain water quality.

Tank Mates / Compatibility

This is a semi-aggressive predatory species, so compatibility must be approached cautiously. The safest option is a species tank. In very large aquaria, some keepers successfully house Channa asiatica with robust, similarly sized fish that are too large to be swallowed and not easily intimidated. Even then, individual temperament varies, and introductions should be monitored closely.

Suitable companions, where space allows, may include large, sturdy fish such as big barbs, large danios, selected catfish or other tough species that can tolerate similar water conditions and are not likely to nip fins. However, there is always risk. Smaller fish will almost certainly be eaten, and delicate species will be stressed. In many cases, the best practice is to keep this fish alone or in a carefully managed pair if breeding is intended.

Do not mix with shrimp, small snails or ornamental invertebrates, as these will usually be treated as food. Avoid slow-moving fish, long-finned species and anything that cannot defend itself. If you are unsure, choose a species-only setup.

Why Buy from Tropical Fish Co

At Tropical Fish Co, we understand that live fish need more than just a box and a label. Our stock is selected with care, packed professionally and dispatched with attention to welfare and water quality. We aim to make ordering live fish straightforward and reliable, with fast UK delivery and a live arrival guarantee for peace of mind.

We also provide clear, practical husbandry information so you can prepare the right environment before your fish arrives. Whether you are an experienced predator fish keeper or planning your first snakehead species tank, we want to help you succeed with healthy stock and honest advice. If you are ready for a fish with real personality, Channa asiatica is a superb choice for the dedicated aquarist.