American Society for Ichthyologists and Herpetologists

ASIH was founded in 1913 and is dedicated to the scientific study of fishes, amphibians and reptiles. The primary emphases of the Society are to increase knowledge about these organisms, to disseminate that knowledge, and to encourage and support young scientists who will make future advances in these fields.

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Largest predatory fish

Adult specimens of the great white shark (Carcharodon carcharias) average 4.3–4.6 metres (14–15 feet) in length, and generally weigh 520–770 kilograms (1,150–1,700 pounds). There are claims of huge specimens reaching up to 10 metres (33 feet) in length and, although few have been properly authenticated, there is plenty of circumstantial evidence to suggest that some great whites grow to more than 6 metres (20 feet).