Carcharhinids are typically sharklike in appearance, having two dorsal fins, an elongate upper tail.... shark speci

Carcharhinids are typically sharklike in appearance, having two dorsal fins, an elongate upper tail lobe, and single-cusped, blade-shaped teeth. The name blacktip shark applies to any of several species with dark fin tips. Two Atlantic species are the small blacktip ( Carcharhinus limbatus ), which grows to about 2.5 m, and the somewhat larger large blacktip, or spinner shark ( C. The bull shark grows to about 3.5 m. The Lake Nicaragua shark, which is considered a race of bull shark by some, is found in Lake Nicaragua. The soupfin shark ( Galeorhinus zyopterus ) is a North American Pacific species that was once heavily fished for its vitamin-rich liver oil. All three species are gray or brownish, grow to about 2 m long, and are often found in schools. The whitetip shark has long pectoral fins; a large, rounded first dorsal fin; and is coloured white below and olive, gray, brown, or bluish above, with white fin tips.