We’re starting November with the finetooth shark (Carcharhinus isodon), a relatively small shark (it only gets up to 1.9 m or 6.2 ft)! Name doesn’t ring a bell? No worries, you might know them as something else!
They are also known as the “Eventooth shark,” “Smooth-tooth shark,” and “night shark.” This slender shark can be easily identified by its needle-like teeth that gives it the common name “finetooth.” A dark blue-gray colour on top, it has a creamy underbelly and long gill slits.
Like many sharks, female finetooth sharks tend to grow slower and large than males. Found in the western Atlantic Ocean, you can observe these sharks from North Carolina all the way down to Brazil. They are known to form large groups (called schools) in shallow, coastal waters. Finetooth sharks also migrate seasonally to follow warmer water! I think they have a pretty good idea in play there, if I say so myself.
These animals prefer to be near beaches or in bays and estuaries, tending to inhabit extremely shallow waters that get no deeper than 10 m (33 ft) in the summer and 20 m (66 ft) deep in the winter. Here, they hunt for small bony fish which primarily make up their diet, especially menhaden.
Finetooth sharks are viviparous, and females can give birth to 2–6 pups in estuarine nursery areas every other year! However not much else is known about these animals, so the IUCN cannot assess its status in the region beyond Least Concern (LC).
what new #finfact did you learn about this animal?
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TFUI Founder Melissa C. Marquez is author of all animal bios and "Behind the Fins" segments.
SEE MELISSA'S TEDx TALK HERE:
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