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Anal fins are paired fins near the tail end of some fish. Some sharks have an anal fin, including the following orders: Carcharhiniformes, Lamniformes, Orectolobiformes, Heterodontiformes, and Hexanchiformes.
Squatina, also known as monkfish, are flat-bodied, bottom-dwelling sharks with a blunt snout.
Aplacental viviparity (which used to be called ovoviviparity) is when animals hatch from eggs, but the eggs hatch and the babies develop inside the female's body. There is no placenta to nourish the pups. Great white sharks reproduce in this manner
Atlantic Sharpnose Shark
The Atlantic Sharpnose Shark (Rhizoprionodon terraenovae) is a harmless, edible, requiem shark (Family Carcharinidae). The Sharpnose is a small, slender shark with 5 gill slits, two dorsal fins, an anal fin, no fin spines, the mouth behind the eyes, and nictitating eyelids. It has a long, sharp snout, black-edged dorsal and caudal fins (which fade with age), and furrowed or wrinkled corners of the mouth. It is brown to olive-gray colored with white countershading on the belly and is from 2 to 4 feet (60-120 cm) long. A carnivore, it eats small fish, mollusks, and shrimp. The sharpnose is viviparous, with litters of 4 to 7 pups. Classification: Order Carcharhiniformes.
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