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NL·0513AnimalsLatimeriidaeFish22 field observations
West Indian Ocean coelacanthNL·0513
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Name
Latimeria chalumnae
Family
Latimeriidae
Native to
Western Indian Ocean: Comoros, Mozambique, South Africa, Tanzania, Kenya and Madagascar
Habitat
Deep reef slope, Submarine caves
IUCN CR · Critically endangered

West Indian Ocean coelacanth

Latimeria chalumnae

Also calledGombessa (Comorian) · Qiāngjíyú 腔棘鱼 (Chinese) · Celacanto (Spanish/Portuguese)

A lobe-finned 'living fossil' known only from fossils and believed extinct for 66 million years until a fisherman's catch in South Africa in 1938. Its fleshy fins and ancient lineage make it a cousin of the fish that first walked onto land.

The West Indian Ocean coelacanth, sometimes known as the gombessa, African coelacanth, and simply coelacanth, is a crossopterygian, one of two extant species of coelacanth, a rare order of vertebrates more closely related to lungfish and tetrapods than to the common ray-finned fishes. The other extant species is the Indonesian coelacanth. Wikipedia

§1

What it can do

  1. iMoves its paired lobed fins in an alternating pattern like the legs of a walking tetrapod
  2. iiSenses prey's electric fields with a jelly-filled rostral organ in its snout
  3. iiiDrifts head-down in 'headstands' while hunting
  4. ivOpens its mouth unusually wide thanks to a hinged joint in its skull
  5. vLives about a century and carries its young for around five years
§2

In the field

Field marks

  • aLarge, deep blue fish with white blotches
  • bFleshy, limb-like lobed fins
  • cThree-lobed tail
  • dSluggish, drifting swimmer
When
Resident; hides in caves by day
§3

Life & habits

Diet
Carnivore: fish, squid and cuttlefish
Habitat
Steep volcanic slopes at 150–700 m; shelters in caves by day
Size
Up to ~2 m and ~90 kg
Lifespan
~100 years

By day small groups share the same lava caves, then drift out alone at night to hunt along the slope.

§4

Where it lives

Recorded sightings

—

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

Native range

Western Indian Ocean: Comoros, Mozambique, South Africa, Tanzania, Kenya and Madagascar

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

§5

In the stacks

Searching the stacks…

Every page naming Latimeria chalumnae in the Biodiversity Heritage Library →

§6

Marginalia

Museum curator Marjorie Courtenay-Latimer spotted one in a trawler's catch at East London, South Africa, in December 1938 and the ichthyologist J.L.B. Smith named it for her. Comorian fishermen had long known the fish, which they called gombessa.

Curiosity

A second species, Latimeria menadoensis, was found in an Indonesian fish market in 1997, about 10,000 km away.

§7

Kinship

  1. kingdomAnimalia
  2. ›phylumChordata
  3. ›subphylumVertebrata
  4. ›classSarcopterygii
  5. ›orderCoelacanthiformes
  6. ›familyLatimeriidae
  7. ›genusLatimeria
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 104109.