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Encyclopedia / Oddballs & Predators / Ceylon snakehead
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Variations

1 kinds · tap one for a closer look

Ceylon snakehead

Channa orientalis · Oriental snakehead, Sri lankan snakehead

Territorial and predatory; best kept alone.

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· real AED shop prices, never conversions
10 cmBody length, without tail ✓
16–24 °CTemperature ✓
6–7.5pH ✓
81 LSmallest tank ✓
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Tank mates
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✕Not recommended
  • Ceylon snakehead eats animals up to about 8 cm. Neon tetra only grows to 2.5 cm.
✕Not recommended
  • Ceylon snakehead eats animals up to about 8 cm. Cardinal tetra only grows to 3 cm.
  • Only a narrow temperature range suits both: 23–24 °C.
✕Not recommended
  • Ceylon snakehead eats animals up to about 8 cm. Black neon tetra only grows to 3.2 cm.
!With conditions
  • Only a narrow temperature range suits both: exactly 24 °C.
!With conditions
  • Only a narrow temperature range suits both: exactly 24 °C.
✓Compatible
✓Compatible
✓Compatible
✓Compatible
✓Compatible

124 species in our list are a good match.

Facts checked against sources on 16 Oct 2026. ✓ means a source backs it; ? means no reliable source yet. See sources

Care and water

Hardness ✓1–10 dGH
Group size ✓2 or more
Temperament ✓Semi-aggressive
Swims at ?All levels
Care level ✓Moderate
Diet Carnivore
Lifespan ?Unknown
Size in shops 5–10 cm
Growth Medium

Behavior

Territorial and predatory; best kept alone.

Check your local laws. US: all live snakeheads (genera Channa and Parachanna, family Channidae) and their viable eggs are injurious wildlife under the Lacey Act (listed 4 Oct 2002, 50 CFR 16.13); importation into the US and interstate transportation or acquisition are prohibited without a USFWS permit. C. orientalis is named in the list. EU: not checked for this species; Channa argus is the only snakehead in the 2022 additions to the EU invasive-species list. Check the rules where you live before you buy one, and never release it into the wild.

  • cave

Food

Frozen foods, worms and small fish.

Tap a food to see what it is.

Male or female

Adult males are slightly slimmer and have more intense colour in the unpaired fins than females; colour gets stronger in breeding fish.

Health

Common problems. Tap one to see the signs. This is a guide, not a diagnosis.

Breeding

Mouthbrooder · Hard

Paternal mouthbrooder that forms lasting pairs: the male holds the eggs in his mouth; the female lays infertile eggs to feed the free-swimming fry and both parents guard them for several weeks. Start with 6-8 young fish to let a pair form.

Pairing

A pair in a quiet tank.

Setup

200 L tank with caves and lids.

What starts it

Warm water and live food.

Eggs

The male holds the fertilised eggs for about 3-5 days (some up to 10 days). Egg count not found.

Raising the fry

Fry take baby brine shrimp.

Common mistakes
  • Putting males together
Full breeding guide, day-by-day plan and simulator →

Where it lives in the wild

RegionSri Lanka
HabitatShaded streams and pools in forest
Native rangeAbout 150 km across
See it on the world map

The story of the ceylon snakehead

A small snakehead (about 10 cm) found only in the rainforest wet zone of southwestern Sri Lanka. It is threatened in the wild (IUCN Vulnerable), and keepers maintain known collection lines separately. Its name has long been misapplied to snakeheads from elsewhere in Asia.

Bloch and Schneider described this small snakehead in 1801. In the strict sense it is found only in Sri Lanka, though the name was long used for related fish across Asia.

First described by Marcus E. Bloch & Johann G. Schneider in 1801.

  • It has no pelvic fins.
  • The male broods the eggs and young in his mouth.
  • It is one of the smallest snakeheads.

Sources

16 facts checked with sources

  • Scientific name

    Valid name Channa orientalis Bloch & Schneider, 1801. Seriously Fish: the name has been widely misapplied to Channa populations outside Sri Lanka (many of which are C. gachua); FishBase's page still reflects the old broad concept (range 'Afghanistan ... to Indonesia', 33 cm). Trade fish labelled C. orientalis from outside Sri Lanka are probably C. gachua-group fish.

    FishBase: Channa orientalis summary · Seriously Fish: Channa orientalis
  • Familycorrected

    Legacy has no family. Order Anabantiformes.

    FishBase: Channa orientalis summary
  • Sizecorrected

    size-pick: Seriously Fish 10 cm SL kept (Pethiyagoda: typically not over 10 cm). FishBase's 33 cm TL comes from its old broad concept that includes non-Sri Lankan fish (likely C. gachua), so it is not used. Legacy 20 cm is too high. (Courtenay & Williams quote taken from the PDF text with line-break artefacts removed.)

    Seriously Fish: Channa orientalis · Courtenay & Williams (2004) Snakeheads (Pisces, Channidae): a biological synopsis and risk assessment, USGS Circular 1251 · FishBase: Channa orientalis summary
  • Temperaturecorrected

    Seriously Fish 16-24 °C; legacy 20-28 °C is too warm at the top.

    Seriously Fish: Channa orientalis
  • pH

    Inside Seriously Fish's 5.0-7.5; soft, slightly acidic forest-stream water.

    Seriously Fish: Channa orientalis
  • Hardnesscorrected

    Legacy has no hardness.

    Seriously Fish: Channa orientalis
  • Smallest tankcorrected

    90 x 30 cm base x 30 cm = 81,000 cm³ = 81 L (Seriously Fish also gives ~81 L). Legacy 200 L is generous and fine as a recommendation.

    Seriously Fish: Channa orientalis
  • Group sizecorrected

    Seriously Fish: kept as a pair (forms lasting pair bonds); never more than one pair. Legacy 1 too strict.

    Seriously Fish: Channa orientalis
  • Temperament

    Seriously Fish quick facts say 'peaceful' but it is a predator and very hostile to other conspecifics.

    Seriously Fish: Channa orientalis
  • Care level

    Seriously Fish rates it Moderate.

    Seriously Fish: Channa orientalis
  • Where it livescorrected

    Legacy has no range. IUCN Vulnerable (2019); Seriously Fish says probably endangered. FishBase's range text uses the old broad concept and is not used.

    Seriously Fish: Channa orientalis · FishBase: Channa orientalis summary
  • Male or female

    Legacy (males slimmer and more colourful) matches; the longer dorsal is not mentioned for this species. Juveniles and females show an eyespot in the rear dorsal fin (Seriously Fish).

    Seriously Fish: Channa orientalis
  • Breeding

    Legacy 'male mouthbrooder' confirmed.

    Seriously Fish: Channa orientalis · FishBase: Channa orientalis summary
  • Eggs and youngcorrected

    Legacy '50-200 eggs' not confirmed; holding time added.

    Seriously Fish: Channa orientalis
  • Storycorrected

    Sri Lanka and 'rarely seen, popular with specialists' fit. 'Orange-brown body with spotted fins' not confirmed (Courtenay & Williams cite brown body; males have blue, black and orange fins).

    Seriously Fish: Channa orientalis · FishBase: Channa orientalis summary
  • traits.legal

    US rule cited from the current eCFR text (amended 67 FR 62203, 4 Oct 2002). Many US states also ban possession; state rules, Canada beyond Ontario, and Australia were not checked here. The EU list check is limited to Implementing Regulation (EU) 2022/1203, which added only C. argus among snakeheads; the full current consolidated list was not fetched. UK and other national rules not checked for this species.

    eCFR 50 CFR 16.13 (US injurious wildlife: fish) · USGS Nonindigenous Aquatic Species: Northern Snakehead (Channa argus) fact sheet