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Latimeria chalumnae
Coelacanth
(Also: Gombessa; Latimeria; Old four legs)


By Robin Street

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Sarcopterygii
Family: Latimeriidae
Genus: Latimeria
Species: Latimeria chalumnae

Geographic Range

Off the coast of South Africa from Madagascar southward.

Biogeographic Regions
indian ocean (Native )

Habitat

Latimeria live in deep (apprx. 400m), cool(15-17 degrees centigrade), marine water. They generally inhabit lava beds.

Aquatic Biomes
oceanic vent ; coastal

Physical Description

Average mass
80 kg
(176.21 lb)

Average mass
52250 g
(1841.41 oz)
[External Source: AnAge]

Latimeria has a single, large, elongated, pseudo-lung filled with fat, a vertually linear heart, shark-like intestines with a spiral valve, and an axial skeleton composed only of a hollow tube of cartilage called a notocord. They possess hinges in their skulls that allow then to consume large prey. Latimeria also has a special electroreceptive device called a rosteral organ in the front of the skull . Their color ranges from brown to dark blue, but it is believed that no two fish have exactly the same pattern. They are particularly mucilaginous; not only do the scales exude mucus, but their bodies continually ooze a large quantity of oil.

Reproduction

Latimeria are ovoviparous; adults locate eachother for breeding with their electro-receptive rosteral organs.

Lifespan/Longevity

Average lifespan
Status: captivity

48 years
[External Source: AnAge]

Behavior

Latimeria stands on its head, swims backwards and belly up to locate its prey with the rosteral gland. Scientists suspect that one reason Latimeria has been so successful is that they can slow down their metabolisms at any time, sinking into the less-inhabited depths and minimizing their nutritional requirements.

Food Habits

All that is known about the food habits of Latimeria is that they are carnivorous, feeding primarily on fish and squid. They have a rosteral organ in the front of their skulls that emits electromagnetic waves, used to detect prey.

Conservation Status

IUCN Red List [Link]
Critically Endangered

We have no real estimate on the Latimeria population; enough of them have been caughtto suggest that there may be undiscovered populations in other locations in the Indian Ocean and perhaps elswhere.

Other Comments

Latimeria is a fish that had supposedly been extinct for over 60 million years. The most important aspect of its sensational discovery was that an early form related to Latimeria, Eustheonopteron, is believed to have been the ancestor of all modern amphibians, reptiles, birds, and mammals.

For More Information

Find Latimeria chalumnae information at

Contributors

Robin Street (author), University of Michigan.

References

Frick, Hans. 1988. National Geographic. vol. 173:824-838.

Herald, Earl S. 1962. Living Fishes of the World. Doubleday, Inc.

Migdalski, Edward C. 1976. The Fresh Salt Water Fishes of the World. Alfred A. Knopf Inc. New York.

To cite this page: Street, R. 1999. "Latimeria chalumnae" (On-line), Animal Diversity Web. Accessed February 12, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Latimeria_chalumnae.html

Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

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