The Nature LibraryEN·ES
NL·0256AnimalsAnabantidaeFish942 field observations
Climbing perchNL·0256
Plate 1 of 5. (c) Abu Hamas, some rights reserved (CC BY-SA), uploaded by Abu Hamas · via iNaturalist

Herbarium of the Nature Library

Name
Anabas testudineus
Family
Anabantidae
Native to
Pakistan and India east to southern China, the Philippines and Indonesia; introduced to Papua New Guinea and northern Australian islands
Habitat
Swamps, Paddy fields, Ponds, Ditches
IUCN LC · Least concern

Climbing perch

Anabas testudineus

Also calledKoi কই (Bengali) · Kavai (Hindi) · Pla mo ปลาหมอ (Thai) · Puyu (Malay) · Cá rô đồng (Vietnamese) · Panayeri (Tamil)

A small, armoured air-breather that can 'walk' across land on its gill covers and fins in search of new water. It is a beloved Bengali food fish, sold alive in markets because it survives hours out of water.

The climbing perch is a species of amphibious freshwater fish in the family Anabantidae. A labyrinth fish native to Far Eastern Asia, the fish inhabits freshwater systems from India, Bangladesh and Sri Lanka in the west, to Southern China in the east, and to Southeast Asia west of the Wallace Line in the south. Wikipedia

§1

What it can do

  1. iBreathes air through a labyrinth organ above the gills
  2. iiMoves over land by rocking on spiny gill covers and pushing with its fins and tail
  3. iiiSurvives out of water for hours if kept damp, and buries itself in mud in the dry season
  4. ivTolerates stagnant, warm, oxygen-poor and slightly brackish water
§2

In the field

Field marks

  • aSmall, robust, perch-like body with rough scales
  • bOlive to grey-green with a dark spot at the base of the tail and often one behind the gill cover
  • cSerrated gill cover with sharp spines
  • dLong spiny dorsal fin
Not to be confused with
Gouramis (Trichogaster) are thinner and have long, thread-like pelvic fins. Snakeheads have a long, cylindrical body and a flat head.
Where to see it
Village ponds and paddies of Bangladesh and West Bengal; live tanks in markets in Dhaka, Kolkata, Bangkok and Kuala Lumpur
When
Resident; breeds at the start of the rainy season (May–August); overland movements after heavy rain
§3

Life & habits

Diet
Omnivore: insects, small fish, shrimp, worms and plant matter
Habitat
Shallow, vegetated still waters: swamps, paddies, ponds and canals
Size
Usually 10–20 cm; up to about 25 cm
Lifespan
Around 5–8 years

After heavy rain it may leave drying pools and travel overland at night to new water. Spawning pairs release floating eggs in the rainy season.

§4

Where it lives

Recorded sightings

—

geo-referenced records in GBIF, from museums, herbaria and field observers.

Native range

Pakistan and India east to southern China, the Philippines and Indonesia; introduced to Papua New Guinea and northern Australian islands

Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.

§5

In the old herbals & bestiaries

No plate in the Source Library names this exact species, so these show its closest relatives as the old naturalists drew them: same genus, or the same kind of animal. Click a plate to read the page it came from, with translation.

§6

In the stacks

Searching the stacks…

Every page naming Anabas testudineus in the Biodiversity Heritage Library →

§7

Marginalia

In 1797 a Danish East India Company officer, Daldorf, reported seeing one climbing a palm tree near Tranquebar, which gave the fish its English name and its genus name Anabas, Greek for 'climber'. Most biologists doubt the tree story but accept that it travels over land.

Curiosity

Its species name testudineus means 'tortoise-like', after its tough, armoured head and scales.

§8

Kinship

  1. kingdomAnimalia
  2. ›phylumChordata
  3. ›subphylumVertebrata
  4. ›classActinopterygii
  5. ›superorderAcanthomorpha
  6. ›orderAnabantiformes
  7. ›suborderAnabantoidei
  8. ›familyAnabantidae
  9. ›genusAnabas
Open its branch on the Wheel of Life →

Photographs: iNaturalist contributors under the licences shown. Records: GBIF.org. Historical plates: Source Library (CC BY-SA 4.0; originals public domain). Summary text: Nature Library editors and Wikipedia (CC BY-SA). Medicinal and edibility notes are historical and educational, not advice. iNaturalist taxon 93987.