Labeo Bicolor

Epalzeorhynchos bicolor

Photo of aquarium fish Labeo Bicolor
Natural range
  • Thailand area
  • Southeast Asia area
CyprinidsConservation status: Critically endangered CR

Family:Cyprinids (Cyprinidae)

Other scientific names: Epalzeorhynchus bicolor, Labeo bicolor

Labeo Bicolor, also known as the Red-tailed Black Shark, is classified as Epalzeorhynchos bicolor and belongs to the family Cyprinidae. This attractive fish, known for its unpretentiousness and unique appearance, draws attention with its contrasting, almost black body coloration and bright red elements. It is important to remember that due to its aggressiveness towards other species, it is not suitable for typical community tanks. It is worth noting that this ornamental species appears in trade quite rarely, which is due to the difficulties of breeding it in captivity.

Required aquarium volume
200 L
Size in aquarium
12 cm
Temperature
24 – 28 °C
Temperament
Territorial (often aggressive)
Parameters
Temperature24 – 28 °C
Water pHSlightly acidic (6) – Neutral (7.5)
Water dHSoft (5) – Hard (15)
Water salinityno salt (freshwater)
Size in aquarium12 cm
Lifespan15 years
TemperamentTerritorial (often aggressive)
Toward small fishnot a predator
Required aquarium volume200 L
Lightingmoderate (regular)
Substratesand or gravel + stones/boulders
Water flowmoderate
FeedingMeat with plant additives (omnivores)
CareSolitary

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Labeo Bicolor get?

An adult reaches 12 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Labeo Bicolor need?

The minimum recommended volume is 200 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Labeo Bicolor need?

Temperature 24–28 °C, pH 6–7.5, hardness 5–15 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Labeo Bicolor live?

Around 15 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Labeo Bicolor aggressive?

Temperament: territorial (often aggressive). Keep this in mind when choosing tank mates.

How many Labeo Bicolor should be kept together?

Recommended setup: solitary. Ignoring this is a common cause of stress and disease.

What does Labeo Bicolor eat?

Diet type: meat with plant additives (omnivores). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Labeo Bicolor?

The scientific name of the species is Epalzeorhynchos bicolor, family Cyprinids (Cyprinidae). It also appears in the literature as: Epalzeorhynchus bicolor, Labeo bicolor.

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