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FRESH WATER

Fishes

Rainbow shark
(Epalzeorhynchos frenatus)

francais anglais
Rainbow shark

Rainbow shark
(Epalzeorhynchos frenatus)

This fish has a strong temper and we notice it quickly! The Rainbow sharkminnow is as aggressive as it is beautiful. We will take some precautions so that its maintenance goes well and concerning its possible roommates. This is also the purpose of this sheet, to help you maintain properly this special fish!

Scientific name

Epalzeorhynchos frenatus
Labeo frenatus
Epalzeorhynchos
frenatum Labeo erythrura
Labeo erythrurus

Common name

Rainbow shark
Rainbow sharkminnow

Origin

what are its countries of origin?

Origin: Mekong Basin between Laos, Cambodia and Thailand
Biotope: Asian

Dimorphism

what are the physical differences between males and females?

Presence of a black border on the anal fin of the male. The female is more imposing

Group

Group

Cyprinidae

Volume

what is the minimum volume for this species?

250 L / 55 imp gal / 66 US gal alone
800 L / 176 imp gal / 211 US gal in group

Water parameters

what are the water parameters for the maintenance of this fish?

T°: 22 to 26°C or 72 to 79°F
pH: 6 to 7
Hardness: 5 to 10°dGH

Difficulty

Difficulty

Average

Size

what is the maximum size of this fish?

10 to 15 cm (4 to 5.9")

Life expectancy

what is the average life expectancy of this fish?

10 years

Living zone

in which area of the aquarium does this fish live?

Middle and depth

Individuals

sociability of the species

1 or 5/6

Food

How to feed the Rainbow shark?

Food

How to feed the Rainbow shark?

Omnivorous: all forms of food are accepted with plant supplements (spinach, cucumber, zucchini, peas shelled for example).

Behavior

What kind of behavior does the Rainbow shark have?

Behavior

What kind of behavior does the Rainbow shark have?

It is the most peaceful of the 4 species of Epalzeo, but it nevertheless remains classified in the category of aggressive and territorial fish. Lively and active, it must absolutely not cohabit with calm or shy fish. Finally, its strong temper is more a very developed sense of the territory.

When the aquarist understands its territorial rules and takes them into account, the Rainbow sharkminnow is a fish that will live its life peacefully.

Cohabitation

Who can live with the Rainbow shark?

Cohabitation

Who can live with the Rainbow shark?

The Rainbow shark will be a better choice for a community aquarium than the Redtailed Labeo. However, its roommates must also be carefully chosen.

Indeed, the species that resembles it are to be avoided (other Epalzeorhynchos, Crossocheilus, Balantiocheilus, Garra, Gyrinocheilus). On the other hand, it seems less belligerent towards the grouper (Botia, Syncrossus, Yasuhikotaki, Chromobotia), and only tolerates the presence of its congeners in large volumes (5/6 individuals in 800 L or 210 gal).

In a large aquarium (500 L or 130 gal), it can cohabit with large Cichlids with a strong temper, or with some very lively species such as Puntigrus tetrazona (Sumatra barbs), Etroplus or Danios.

You will understand, all your population will turn around this particular fish!

Breeding

How to breed the Rainbow shark?

Breeding

How to breed the Rainbow shark?

Very difficult, even if the breeding of this species remains more feasible than that of Redtailed Labeo. Identical procedure: place in a spawning tank (200 L or 50 gal) composed of numerous hiding places and plant tuft, 1 male and 1 female. Temperature 24/27°C or 75/80°F and pH at 6.5/7. Install a powerful filtration that will generate a large current. The lighting will be dimmed. Spawning takes place within 24 hours. A laying may include up to 1000 eggs. The incubation lasts 36 hours. From the age of one month, add vegetable supplements to their food.

Fry food: infusoria, then nauplies of artemia and cyclops.

Its aquarium

Which aquarium for the Rainbow shark?

Its aquarium

Which aquarium for the Rainbow shark?

The Rainbow shark is not very demanding as for its decoration. However, it seems happier in an aquarium composed of fine sand, luxurious vegetation, driftwood root, some rocks of different sizes and floating plants to sift the lighting. Finally, install a moderate current.

Good to know

Good to know

Find all additional information!

The special temper of the Rainbow shark makes it a fish reserved for experienced aquarists.

Do not buy it as an «algae eater» because you may have big problems with your existing population. Prefer the Crossocheilus which are much better eater of seaweed.

The albino variant of this species seems less aggressive.

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