fish, lamniform
thresher shark
Alopias Rafinesque, 1810
Alopiidae
Thresher sharks are large lamniform sharks of the family *Alopiidae* found in all temperate and tropical oceans of the world; the family contains four species, all within the genus *Alopias*: *Alopias pelagicus* H. Nakamura, 1935 (pelagic thresher); *Alopias superciliosus* R. T. Lowe, 1841 (bigeye thresher); *Alopias vulpinus* Bonnaterre, 1788 (common thresher).
alopias
requires discussion