lung fish

lungfish

[luhng-fish]
noun, plural (especially collectively) lungfish (especially referring to two or more kinds or species) lungfishes.
any of various slender, air-breathing fishes of the order (or subclass) Dipnoi, of rivers and lakes in Africa, South America, and Australia, having a lunglike air bladder as well as gills and growing to a length of 3 to 6 feet (0.9 to 1.8 meters).

Origin:
1880–85; lung + fish

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World English Dictionary
lungfish (ˈlʌŋˌfɪʃ)
 
n , pl -fish, -fishes
any freshwater bony fish of the subclass Dipnoi, having an air-breathing lung, fleshy paired fins, and an elongated body. The only living species are those of the genera Lepidosiren of South America, Protopterus of Africa, and Neoceratodus of Australia

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Science Dictionary
lungfish   (lŭng'fĭsh')  Pronunciation Key 


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Any of several tropical freshwater fish of the order or subclass Dipnoi that, in addition to having gills, have lunglike organs for breathing air. Lungfish have a long, narrow body, and certain species can survive periods of drought inside a mucus-lined cocoon in the mud. The lungfish and the coelacanths are the only living lobe-finned fishes.
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