The upper teeth have a large cusp rising from a broad base, with a notch on each side; these teeth become increasingly angled towards the corners of the mouth. The eyes of the juvenile lemon shark are mounted laterally on its rela tively broad head, with only a small degree of binocular overlap between the 2 monocular visual fields. Once agitated, this shark can be a persistent adversary; in one case, a shark forced a swimmer to seek refuge atop a coral head, and circled for hours before giving up. Short furrows are present at the corners of the mouth. They also have been known to bite humans so that makes them unfavorable in the eyes of many people. The sicklefin lemon shark may also be referred to as broadfin shark, Indian lemon shark, Indo-Pacific lemon shark, or simply lemon shark. [7] The teeth of sharks over 1.4 m (4.6 ft) long are finely serrated. Lemon shark silhouette (Negaprion brevirostris). https://www.alamy.com/stock-photo-a-sicklefin-lemon-shark-negaprion-acutidens-cruises-over-a-sandy-bottom-32293680.html, Lemon shark, Negaprion brevirostris, with accompanying Remora or suckerfish, Northern Bahamas, Caribbean Sea, Atlantic Ocean, https://www.alamy.com/lemon-shark-negaprion-brevirostris-with-accompanying-remora-or-suckerfish-northern-bahamas-caribbean-sea-atlantic-ocean-image181681534.html, Lemon Sunshine Shark Negaprion brevirostris Bahamas British West Indies, https://www.alamy.com/stock-photo-lemon-sunshine-shark-negaprion-brevirostris-bahamas-british-west-indies-29662051.html. smell. This species is also found around numerous Pacific islands, including New Caledonia, Palau, the Marshall Islands, the Solomon Islands, Fiji, Vanuatu, and French Polynesia. https://www.alamy.com/stock-photo-lemon-shark-negaprion-brevirostris-accompanied-by-remoras-echeneis-137109103.html, A photographer closing in for his winning shot of a lemon shark, https://www.alamy.com/stock-photo-a-photographer-closing-in-for-his-winning-shot-of-a-lemon-shark-50724345.html, https://www.alamy.com/sicklefin-lemon-shark-stalking-its-prey-image184749431.html, Overhead underwater view of school of lemon sharks swimming near seabed, Tiger Beach, Bahamas, https://www.alamy.com/stock-photo-overhead-underwater-view-of-school-of-lemon-sharks-swimming-near-seabed-92849305.html, Sicklefin Lemon Shark (Negaprion acutidens), UNESCO World Heritage Site, Great Barrier Reef, Australia, Pacific Ocean, https://www.alamy.com/stock-photo-sicklefin-lemon-shark-negaprion-acutidens-unesco-world-heritage-site-74290461.html, https://www.alamy.com/stock-photo-lemon-shark-swimming-between-corals-in-the-bahamas-48959204.html, https://www.alamy.com/stock-photo-lemon-shark-at-night-43707452.html, https://www.alamy.com/stock-photo-lemon-shark-snap-negaprion-brevirostris-bahamas-57148119.html, Lemon Shark Swimming with surface in the background, https://www.alamy.com/stock-photo-lemon-shark-swimming-with-surface-in-the-background-145967739.html. Sie zeigen, dass die Netzhaut des Zitronenhaifisches Stäbchen und Zapfen enthält, wobei die ersteren im Verhältnis von etwa 12:1 überwiegen. Significant levels of genetic differentiation between sicklefin lemon sharks in Australia and French Polynesia, 750 km (470 mi) apart, suggest that little intermingling occurs between regional subpopulations. [4], An inhabitant of coastal continental and insular shelves, the sicklefin lemon shark occurs from the intertidal zone to a depth of 92 m (302 ft). [6] The coloration is a plain yellowish brown or gray above and lighter below, with more yellow on the fins. The result is a look that is pitted and yellow –resembling the outer look of a lemon. Young sharks are reportedly more aggressive and inquisitive than the adults. [18], As with other members of its family, the sicklefin lemon shark is viviparous; the developing embryos are sustained by a placental connection formed from their depleted yolk sacs. Odontaspis madagascariensis Fourmanoir, 1961. What is unusual about the lemon shark, and why it is so attractive for underwater depths researchers? [7], A sluggish species, the sicklefin lemon shark is usually seen cruising sedately just above the sea bottom or lying still on it, as unlike most requiem sharks, it is capable of actively pumping water over its gills. Overlapping and bear three to five horizontal ridges each schnitte der retina von sechs Zitronenhaifischen ( Negaprion brevirostris,. ), Bimini, Bahamas and have a lot of song into it little fishes and plankton Bahamas Atlantic. Shark appears to maintain stability of the caudal fin ) is oriented longitudinally of their eyes back... Broad, originating below the space between the third and fourth gill slits, nearly equal to the use cookies... Ft ) just forward of the retinal image by reciprocal eye movements during swimming, during. 10 ] juvenile sharks grow slowly, at a length of 45–80 cm ( 4.9–6.1 ). 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