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Common remora
The common remora, ''Remora remora'', is a pelagic marine fish belonging to family Echeneidae. ''R. remora'' is different from other remoras in the family Echeneidae by the modification of its dorsal fin.〔''Encyclopedia of Biodiversity''. Volume 2, D-F1. Simon Asher Levin, Editor in Chief. San Francisco, CA: Academic Press, 2001. p. 770〕 The dorsal fin, which has 22 to 26 soft rays, acts as a suction cup, creating a vacuum〔''Fishes of the World'', 3rd edition. Joseph S. Nelson. New York, NY: John Wiley and Sons, Inc, 1994. p. 351〕 to allow it to attach to larger marine animals, such as whales, dolphins, sharks, and sea turtles.
==Physical characteristics==
The common remora has a suckerlike dorsal fin and an anal fin. Its body can be brown, black or grey in color.〔''Smith's Sea Fishes'', 6th edition. Edited by Margaret M. Smith and Phillip C. Heemstra. New York, NY: Springer-Verlag, 1986. p. 662〕 This species can reach in total length, though most do not exceed . The maximum known weight of this species is .〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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