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Dorsal fin   /dˈɔrsəl fɪn/   Listen
Dorsal fin

noun
1.
Unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance.





WordNet 3.0 © 2010 Princeton University


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"Dorsal fin" Quotes from Famous Books



... Percidae; Genus, Acerina; Subgenus, Cernua, Flem. or Ruffe; Species, Cernua bidyana mihi, or Bidyan ruffe. Colour, brownish yellow, with the belly silvery white. The three middle pectoral rays are branched. The dorsals confluent. The first dorsal fin has 11 spines, the ventrals having 1 6 rays, and the anals 3 6. See Plate 9. Observation: Bidyan is ...
— Three Expeditions into the Interior of Eastern Australia, Vol 1 (of 2) • Thomas Mitchell


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