Red Tail Black Shark - Epalzeorhynchos bicolor 2-3cm

£4.99

The Epalzeorhynchos bicolor, commonly known as the Red Tail Black Shark or Red Tail Shark, is a striking freshwater fish native to the Chao Phraya basin in Thailand, though it is now considered critically endangered in the wild.

This eye-catching species features a velvety jet-black body that contrasts dramatically with its vibrant orange-red tail fin, creating one of the most distinctive colour combinations in the aquarium hobby.

Growing to approximately 12-15 centimetres in length, these active bottom-dwellers possess a sleek, streamlined shape with an upturned mouth adapted for grazing algae from rocks and surfaces.

Despite their common name, they are actually members of the carp family rather than true sharks, though their dorsal fin profile and cruising behaviour certainly evoke a shark-like appearance.

Red Tail Black Sharks are notably territorial and semi-aggressive, particularly towards their own species and similarly shaped or coloured fish.

They must be kept singly in community aquariums, as multiple specimens will fight aggressively for territory.

Whilst they can coexist with other species, tank mates should be chosen carefully—fast-swimming fish that occupy the upper water levels such as barbs, danios, and robust tetras generally fare well, whilst other bottom-dwellers, shy species, or long-finned fish should be avoided.

These fish are omnivorous and require a varied diet of algae wafers, spirulina flakes, and vegetable matter supplemented with protein sources such as bloodworms and brine shrimp.

They appreciate a well-structured aquarium with caves, driftwood, and rocky territories where they can establish a home base.

With proper care including regular water changes and adequate space (minimum 120 litres),

Red Tail Black Sharks typically live 8-10 years, though some specimens may reach 15 years, making them a long-term commitment best suited to aquarists prepared to accommodate their assertive personality in appropriate community settings.

We recommend only one in an aquarium.

The Epalzeorhynchos bicolor, commonly known as the Red Tail Black Shark or Red Tail Shark, is a striking freshwater fish native to the Chao Phraya basin in Thailand, though it is now considered critically endangered in the wild.

This eye-catching species features a velvety jet-black body that contrasts dramatically with its vibrant orange-red tail fin, creating one of the most distinctive colour combinations in the aquarium hobby.

Growing to approximately 12-15 centimetres in length, these active bottom-dwellers possess a sleek, streamlined shape with an upturned mouth adapted for grazing algae from rocks and surfaces.

Despite their common name, they are actually members of the carp family rather than true sharks, though their dorsal fin profile and cruising behaviour certainly evoke a shark-like appearance.

Red Tail Black Sharks are notably territorial and semi-aggressive, particularly towards their own species and similarly shaped or coloured fish.

They must be kept singly in community aquariums, as multiple specimens will fight aggressively for territory.

Whilst they can coexist with other species, tank mates should be chosen carefully—fast-swimming fish that occupy the upper water levels such as barbs, danios, and robust tetras generally fare well, whilst other bottom-dwellers, shy species, or long-finned fish should be avoided.

These fish are omnivorous and require a varied diet of algae wafers, spirulina flakes, and vegetable matter supplemented with protein sources such as bloodworms and brine shrimp.

They appreciate a well-structured aquarium with caves, driftwood, and rocky territories where they can establish a home base.

With proper care including regular water changes and adequate space (minimum 120 litres),

Red Tail Black Sharks typically live 8-10 years, though some specimens may reach 15 years, making them a long-term commitment best suited to aquarists prepared to accommodate their assertive personality in appropriate community settings.

We recommend only one in an aquarium.

Scientific name: Epalzeorhynchos bicolor

Common name: Red-Tailed Black Shark, Red-Tailed Shark, Red-Tailed Labeo

Adult Size: 6 inches (15 cm)

Temperature Range: 72 to 79°F (22 to 26°C)

pH Range: 6.5 to 7.5

Compatibility: Generally peaceful, but can be territorial, especially with their own kind and other bottom-dwelling fish. They may also become more aggressive as they mature.

Minimum Tank Size: 120 liters, but a larger tank is better for a group

Originates from: Thailand, specifically the Chao Phraya and Mekong basins

Ideal Substrate: Fine sand or small, smooth gravel

Ideal Tank Mates Suggestions: Peaceful fish such as Tetras, Barbs, Danios, and other small, community fish. They can also coexist with larger, peaceful fish, but avoid keeping them with other aggressive or territorial species.

Fish to avoid: Aggressive or large fish that might see the Red-Tailed Black Shark as food, and smaller fish that could be seen as prey. Avoid keeping them with other Red-Tailed Black Sharks or similar-looking species to prevent territorial disputes.

Diet: Omnivorous; they will eat a variety of foods including high-quality sinking pellets, live food, and frozen food. They are also known to eat algae and can help keep the tank clean.

Breeding: Red-Tailed Black Sharks are egg layers, but breeding them in captivity is extremely challenging and rarely successful. They typically scatter their eggs on plants or other surfaces. Providing dense plants or spawning mops can help protect the eggs and fry from being eaten by adult fish.