Thresher Shark and Similar Species
Alopiidae
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Open the appSeveral fish can be confused with Thresher Shark. Here are the key differences.
Species often confused with {name}
Common Thresher
Alopias vulpinus
Key differences: Smaller eyes, first dorsal fin closer to pectoral fins, generally found in more temperate waters. The white patch from the belly does not extend above the pectoral fin base.
Pelagic Thresher
Alopias pelagicus
Key differences: Smaller and more slender than the Common Thresher, with a more rounded first dorsal fin. The white patch from the belly does not extend above the pectoral fin base. Found primarily in tropical and subtropical Indo-Pacific.
Bigeye Thresher
Alopias superciliosus
Key differences: Distinguished by its very large eyes that extend onto the dorsal surface of the head, and a deep groove running from above the eyes to behind the gill slits. The first dorsal fin is positioned further back than in other thresher species. White belly color extends above the pectoral fin base.
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