热带礁鱼, 81, 是科学家发现的最古老的

Scientists have discovered what they say is the oldest tropical reef fish recorded anywhere in the world — 一位81岁的午夜鲷鱼在西澳大利亚州海岸附近被捕.

八足鱼类, which is old enough to have lived through World War II, was found by the Australian Institute of Marine Science at the Rowley Shoals, 关于 300 公里 (186 英里) west of Broome, as part of a study into the longevity of tropical fish.
Researchers looked at three species they said were not commonly targeted by commercial or recreational fishing in Western Australia and the Chagos Archipelago in the central Indian Ocean. The species included red bass, midnight snapper and black and white snapper.
The 81-year-old midnight snapper was identified alongside 10 other fish over the age of 60, including a 79-year-old red bass that was also caught in the Rowley Shoalsan area spanning three coral reefs at the edge of Australia’s continental shelf.
    Marine scientists determined the age of the fish by dissecting them and studying their ear bones, or otoliths, which contain annual growth bands that can be counted in a similar way as tree rings.
    Brett Taylor, a fish biologist who led the study, said the midnight snapper beat the previous record holder by two decades.
    “到现在, the oldest fish that we’ve found in shallow, tropical waters have been around 60 岁,” 他说.
    We’ve identified two different species here that are becoming octogenarians, and probably older.
    Taylor said the research would help scientists understand how fish length and age will be affected by climate change.
    We’re observing fish at different latitudeswith varying water temperaturesto better understand how they might react when temperatures warm everywhere,” 他说.
      The octogenarian fish is not the oldest sea-dwelling creature to exist.
      Greenland sharks, which are native to Arctic seas, are the longest-living vertebrate on Earth. University of Copenhagen researchers estimated that these sharks live to at least 400 年份, nearly two centuries longer than the whales.

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