It's a new year and the world has its first new shark in 2019. Meet Carcharhinus obsolerus! However, it would be wise to mitigate your expectations if you hope to see the newly described species in the wild. The unique shark, described on the basis of a few decades ago specimens captured, may have died out and disappeared before it was ever named. Between 1897 and 1934, three very young sharks were captured in Vietnam, Borneo and Thailand and found their way into zoological collections of the museum. The sharks had long been recognized as something unusual and difficult to classify as known shark species. Peter Kyne, a shark conservation biologist at the Australian Charles Darwin University and co-author of the recently published publication describing the new species, said some researchers had done so considering the mysterious specimens as a small-tailed shark. There are small-tailed sharks in America, a whole ocean away. "This unlikely distribution pattern for a small shark caused others to question this relationship, and indicated that the Asian specimens represented a separate, as yet unspecified species," said Kyne Earther. To determine how unique the long-dead sharks are Kyne and his colleagues had to compare the inlaid predators with the seemingly most similar living species. The team carefully examined and measured the main physical characteristics of the specimens and some other species, including the shape and number of their teeth and the location of the fins. The researchers even used X-rays to compare the characteristics of shark cartilage skeletons. They found that the three sharks differed so much from their close relatives that they could be classified as completely new species. Since the species has apparently not appeared anywhere since the 1930s, Kyne and his colleagues offer the possibility that the shark could become extinct sometime in recent decades. The researchers even noted the shaman's less promising conservation prospects in the species names: "Obsolerus" is Latin for "extinct". They proposed the English name "lost shark" in the new PLOS ONE paper; We are aware of a species that we did not know before. Among the grim conditions of the lost shark is its apparent home of shallow, Southeast Asian coastal waters exposed to intensive, mostly unregulated shark-fish. Even after almost a century of absence, enough reason to hope for the return of the lost shark. Some of the closest relatives of the lost shark have gone missing several decades ago, just to reappear. David Ebert, an ichthyologist and shark specialist at California State University's Moss Landing Marine Laboratories, who are not involved in the study, finds that two Carcharhinus species are particularly affected. The smooth-toothed blacktip shark (Carcharhinus leiodon) was all single Specimen known to be captured off the coast of Kuwait in 1902. The species was named only in 1985 and was considered to be probably extinct, if only as valid species at all. Then, in 2008, the shark miraculously appeared at a fish market in Kuwait, which is about 3,000 kilometers away. Ebert says that a formal description of the species has played a crucial role in its rediscovery. There is also the Borneo shark (Carcharhinus borneensis), which was described in 1858 by a single specimen near the eponymous Indonesian island. A few more were seen sporadically until 1937, but then they disappeared until 2004 when it was discovered at a fish market. But there are also sharks that seem to have disappeared and are not yet a triumphant return in sight. Sharks such as the Pondicherry shark (Carcharhinus hemiodon), which has been extremely rare in Indian waters since its discovery in 1838, have not been reported since the 1970s. "It's the same situation as with this new 'lost shark,' Ebert said to Earther." Is this thing nearby? No one has seen it, or is it gone? We do not know. "Ebert says the lost shark After being formally described as a genuine, unique species, it has a better chance of being recognized as such in future encounters. "Now we have a name for it. We can spread the word around and maybe we'll find more," said Ebert "Maybe someone will see you at a fish market in Vietnam or somewhere and send a picture to one of us [shark scientists] to identify it. That would be great news. "Kyne said it is possible that the lost shark is still patrolling the coastal waters of the South China Sea. For the preservation of populations that may be present, a practical, systematic approach is required, such as the evaluation of species extinction for the IUCN Red List of Endangered Species. Sharks like Carcharhinus obsolerus and their relatives – small, somewhat inconspicuous coastal sharks fished regions – that warns Ebert should be watched more closely. High-profile species such as macaws, threshers and white sharks have a disproportionate interest in conservation, but small sharks in the food chain are the "proverbial canaries in the coal mine" and few people are in control. "These are the things you need to watch out for," Ebert said, "If you notice white sharks and the higher levels, it's probably almost too late for this ecosystem because you've wiped out all subordinate levels." Whatever the last Be the newest shark on the block for a long time New species are described at breakneck speed Ebert notes that over the past 39 years, more sharks and rays have been discovered than in the last 200 years Perhaps some of these animals may be uncovered and protected before they are "lost." Jake Buehler is a scholar living on Washington's Olympic Peninsula who believes that worshiping the Tree of Life is crazy, wild and unsung on Twitter or in his blog.

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