Channa bleheri 9 - (Channa bleheri) — 9-10cm

Overview

The Channa bleheri, commonly known as the Rainbow Snakehead, is a brilliantly coloured dwarf snakehead from India that captivates aquarists with its stunning rainbow-like patterning and fascinating predatory behaviour. Reaching up to 9cm in length, this compact species is well-suited to aquariums of at least 90 litres and thrives in soft, warm water with plenty of cover. Available to buy tropical fish online UK, the Rainbow Snakehead is an excellent choice for experienced aquarists seeking an exotic fish for sale UK with unique character, striking appearance, and engaging behaviour.

Appearance

The Rainbow Snakehead is among the most colourful species of snakehead, displaying a stunning array of blues, greens, oranges, and reds that create a rainbow-like effect along the body. The scales shimmer with metallic iridescence, and the fins are edged with vivid colours that intensify during courtship and territorial displays. The body is elongated and streamlined, with large eyes positioned on top of the head—a characteristic feature of snakeheads. Males typically develop more intense coloration than females, especially during breeding. Overall, the Rainbow Snakehead is a visually spectacular fish that stands out in any aquarium and offers a rare combination of beauty and predatory charisma.

Natural Habitat

Endemic to the Brahmaputra River basin in the Indian states of Assam and Arunachal Pradesh, the Rainbow Snakehead inhabits slow-moving streams, tributaries, and flooded areas with dense aquatic vegetation and soft substrates. The water is typically warm, soft, and slightly acidic, with plenty of submerged roots, leaf litter, and overhanging vegetation providing cover. In the wild, these snakeheads are ambush predators that feed on small fish, insects, and invertebrates. They are also capable of breathing atmospheric air using a labyrinth organ, allowing them to survive in oxygen-poor waters. Replicating these conditions in the aquarium is essential for the health and well-being of this species.

Aquarium Setup

A minimum tank size of 90 litres is suitable for a single Rainbow Snakehead or a pair. Use a substrate of soft sand or fine gravel, and plant the aquarium densely with hardy plants such as Java fern, Anubias, and Vallisneria to create hiding places and reduce stress. Include driftwood, smooth rocks, and leaf litter to replicate the natural habitat. Use a tight-fitting lid with no gaps, as snakeheads are powerful jumpers and can breathe atmospheric air, making them capable of surviving out of water for short periods. Filtration should be gentle to avoid strong currents, and maintain soft, slightly acidic water with regular small water changes. Subdued lighting will reduce stress and encourage natural behaviour.

Feeding

Rainbow Snakeheads are primarily carnivorous, feeding on live and frozen meaty foods. Offer a varied diet of quality frozen and live foods such as bloodworms, earthworms, insect larvae, shrimp, and small fish-based foods. High-quality carnivore pellets can be offered once the fish is settled, though live or frozen foods are preferred. Feed once daily or every other day, and ensure food is appropriately sized for the fish's mouth. Avoid overfeeding, which can lead to water quality issues and obesity. A protein-rich diet will enhance coloration and support the fish's natural hunting instincts.

Behaviour

The Rainbow Snakehead is a shy, retiring fish that spends much of its time hiding among plants and driftwood, emerging to hunt and patrol its territory. They are intelligent and may learn to recognise their keeper, often coming to the surface to breathe atmospheric air or investigate movement. Rainbow Snakeheads are semi-aggressive and can become territorial, especially towards conspecifics. They are best kept singly or as a bonded pair in a species tank. Despite their predatory nature, they are relatively peaceful towards tankmates that are too large to eat, though caution is advised. Their unique behaviour and stunning colours make them a fascinating addition to specialised setups.

Tank Mates

The Rainbow Snakehead is best kept singly or with very peaceful, similarly sized fish in a large, heavily planted tank. Avoid most community fish, as this species is a predator and will eat anything that fits in its mouth. Avoid small fish, shrimp and other small invertebrates, fin-nipping fish, aggressive territorial fish, and fish that fit in its mouth. A species tank is the safest and most appropriate option for this species, allowing the snakehead to display its natural behaviour without stress or conflict.

Breeding

Rainbow Snakeheads may spawn in well-maintained, warm, soft to moderately soft water. The male typically guards the eggs and fry, and breeding is best done in a species tank with minimal disturbance. Provide plenty of hiding places and stable water conditions. The male will guard the eggs aggressively and care for the fry once they hatch. Fry can be raised on newly hatched brine shrimp and finely crushed flakes. Breeding snakeheads is a rewarding challenge that showcases the fascinating parental care strategies of these unique predatory fish.

Why Buy from Tropical Fish Co

Tropical Fish Co is a trusted supplier of tropical fish for sale UK, offering healthy, well-conditioned Rainbow Snakeheads sourced from reputable suppliers and quarantined for quality assurance. We provide expert guidance on snakehead fish UK care, tank setup, water chemistry, and compatible tankmates to help you create a thriving specialised aquarium. With secure packaging, reliable rare freshwater fish UK delivery, and a commitment to customer satisfaction, Tropical Fish Co makes it easy to buy exotic fish for sale UK with confidence. Whether you're building your first predatory fish tank or adding to an established collection, our knowledgeable team is here to support your success.