Definition of lungfish in English:



  • An elongated freshwater fish with one or two sacs which function as lungs, enabling it to breathe air. It lives in poorly oxygenated water and can aestivate in mud for long periods to survive drought.

    • ‘Freshwater types continued to flourish, including the rhizodonts and lungfish.’
    • ‘Tiktaalik would have breathed like a lungfish, says Clack, senior assistant curator at Cambridge's University Museum of Zoology.’
    • ‘The fins are very flexible and potentially useful for supporting the body on land, as in lungfish and tetrapods.’
    • ‘Today lungs are found not only in land vertebrates but also in a few obscure fish lineages, such as gar, bichir, and lungfish.’
    • ‘In the handful of cases currently available for animals, namely lungfishes, amphibians, and conodonts, long-term stasis was found to be the rule.’
    • ‘Among vertebrates, only the cartilaginous fishes, lungfishes and amphibians (especially salamanders) possess exceptionally large C-values.’
    • ‘But in coelacanths, lungfishes and some primitive sharks, the transformation of notochord into a segmented bony vertebral column does not take place.’
    • ‘Tetrapods, whose closest living relatives are lungfish, have two main groups: amphibians and amniotes.’
    • ‘The lungfish use lungs as accessory breathing organs, and during droughts modern forms can survive for several years in burrows.’
    • ‘There are five hypaxial muscles in both the African and South American lungfishes.’
    • ‘He grumbled, rapidly crawling ahead at a rate I'd never have expected to see in a land-adapted fish, be it a walking catfish or a lungfish.’
    • ‘The ray-fins include the thousands of familiar sport and commercial fishes, but of the lobe-fins, only eight species survive, six lungfishes and two coelacanths.’
    • ‘The data set included sequences of genes from mammals, birds, amphibians, coelacanths, lungfishes, ray-finned fishes, and cartilaginous fishes.’
    • ‘These include lungfish, Arapaima, tambaqui, piranha, Hydrolycus, and goliath and pirarara catfishes.’
    • ‘Although the molecules function at high oxygen concentrations in sharks, lungfishes, and even tetrapods, they are most efficient at releasing oxygen in those conditions in codfish and other modern fish.’
    • ‘Long shots for the title include caviar-producing sturgeon, goliath Amazon catfish, giant lungfish, razor-toothed gars, massive cods, and Mongolian salmon.’
    • ‘Compare with the lungfish, another example of living fossil.’
    • ‘A third group of fishes, the lungfishes or fishes that can breathe on land, survive today as freshwater fishes in Queensland.’
    • ‘Tetrapods are part of a larger groups called Sarcopterygii, which also includes several groups of lobe-finned fish, such as lungfish and the coelacanth.’
    • ‘This looks a little like a lungfish and is half fish, half eel shaped.’