Coelacanths (/ ˈsiːləkænθ / ⓘ SEE-lə-kanth) (order Coelacanthiformes) are an ancient group of lobe-finned fish (Sarcopterygii) in the class Actinistia. [2][3] As sarcopterygians, they are more closely related to lungfish and tetrapods (which includes amphibians, reptiles, birds and mammals) than to ray-finned fish.

2025年1月17日 · coelacanth, (genus Latimeria), any of the two living lobe-finned bony fishes of the genus Latimeria. Traditionally, however, coelacanth was the name applied generally to any member of the order Coelacanthiformes, subclass Crossopterygii.

The coelacanth is a "passive drift feeder," moving slowly and passively near the substrate where it feeds primarily on cephalopods (cuttlefish, squid, and octopus) and fishes. It is capable of moving quickly and may do so when capturing prey or avoiding danger.

The coelacanth, a living fossil, is an endangered species with a limited distribution in the western Indian Ocean. It is listed as Endangered on the IUCN Red List due to its small population size and restricted range. The coelacanth population is estimated to be less than 1,000 individuals, and it is believed to be declining. Threats and Challenges

2024年5月27日 · The Coelacanth is a rare, deep-sea fish with limb-like lobed fins and a prehistoric lineage dating back over 360 million years. The coelacanth first evolved almost 400 million years ago. The coelacanth is one of the best-known examples of a “living fossil”: the living remnant of an ancient lineage of fish dating back nearly 400 million years.

2014年1月20日 · Coelacanths are a curious group of fish, represented by only two extant species: the African coelacanth (Latimeria chalumnae) and the Indonesian coelacanth (Latimeria menadoensis). These large, lobe-finned fish live in and around deep-water caves off the coasts of southeastern Africa and Indonesia.

The living coelacanths (“see-la-kanths”), Latimeria chalumnae and Latimeria menadoensis are possibly the sole remaining representatives of a once widespread family of Sarcopterygian (fleshy or lobed-finned) coelacanth fishes (more than 120 species are known from the fossil record).

What is a coelacanth? Coelacanths were first described by Louis Agassiz in 1836 from a 260-million-year-old fossilised fish tail. He named the genus Coelacanthus. Many more fossil coelacanths have been found since, ranging in age from 409-66 million years old. The living West Indian Ocean coelacanth reaches up to two metres long and 100 ...

Coelacanths are elusive, deep-sea creatures, living in depths up to 2,300 feet below the surface. They can be huge, reaching 6.5 feet or more and weighing 198 pounds. Scientists estimate they can...

The coelacanth, Latimeria chalumnae, is one of the world's best-known "living fossils." These primitive fishes, known from fossils dating back to the Triassic period (240 million years ago), were thought to have become extinct in the Cretaceous (65 million years ago) until a live coelacanth was caught by a commercial trawler that landed in East ...