Atlantic Sharpnose Sharks, Rhizoprionodon terraenovae
Taxonomy Animalia Chordata Elasmobranchii Carcharhiniformes Carcharhinidae Rhizoprionodon terraenovae
Description & Behavior
Atlantic sharpnose sharks, Rhizoprionodon terraenovae (Richardson, 1836), are small, gray, streamlined sharks, with characteristic long, pointed snouts. Males reach at least 1 m in length, females may be slightly larger to 1.1 m. Their average weight is 7.25 kg. The edge of their anal fins are either straight or slightly concave. Their second dorsal fins are located behind their anal fins. Atlantic sharpnose sharks are known to reach at least 10 years in age.
World Range & Habitat
Atlantic sharpnose sharks are found in the western Atlantic from New Brunswick, Canada south to the Gulf of Mexico, and in the Southwest Atlantic along the coasts of Brazil in waters ranging from 10-280 m deep at 47°N-33°S. These sharks prefer subtropical waters near continental shelves from the intertidal zone out to deeper waters. They are often found near the surf zone of sandy beaches and in enclosed bays, sounds, harbors, estuaries, and river mouths. This shark is able to tolerate lower salinity levels but, they do not venture into freshwater like bull sharks.
Feeding Behavior (Ecology)
Atlantic sharpnose sharks give birth to 1-7 pups that measure about 29-37 cm at birth.
Conservation Status & Comments
This shark, like most sharks, is harmless to humans.
References & Further Research
Photo from Sharks and Rays. TC Tricas, K Deacon, P Last, JE McCosker, TI Walker, L Taylor. 1997. Nature Company Guides, Time Life Book Series. Weldon Owen Pty Ltd San Francisco.
Research Rhizoprionodon terraenovae » Barcode of Life ~ BioOne ~ Biodiversity Heritage Library ~ CITES ~ Cornell Macaulay Library [audio / video] ~ Encyclopedia of Life (EOL) ~ ESA Online Journals ~ FishBase ~ Florida Museum of Natural History Ichthyology Department ~ GBIF ~ Google Scholar ~ ITIS ~ IUCN RedList (Threatened Status) ~ Marine Species Identification Portal ~ NCBI (PubMed, GenBank, etc.) ~ Ocean Biogeographic Information System ~ PLOS ~ SCIRIS ~ SIRIS ~ Tree of Life Web Project ~ UNEP-WCMC Species Database ~ WoRMS
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