Swordfish and Similar Species
Xiphias gladius
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Open the appSeveral fish can be confused with Swordfish. Here are the key differences.
Species often confused with {name}
Blue Marlin
Makaira nigricans
Key differences: Blue marlins have a rounder, more pointed bill, two prominent keels on the caudal peduncle, and retain pelvic fins. Their first dorsal fin is lower and extends further along the back, and they have scales as adults.
White Marlin
Kajikia albida
Key differences: White marlins are generally smaller, have a more slender, rounder bill, and retain pelvic fins. Their first dorsal fin is higher and more rounded anteriorly, and they have scales.
Sailfish
Istiophorus platypterus
Key differences: Sailfish are easily distinguished by their exceptionally large, sail-like first dorsal fin. They also have a rounder, more pointed bill and retain pelvic fins.
Black Marlin
Istiompax indica
Key differences: Black marlins have a shorter, thicker, and rounder bill. Their pectoral fins are rigid and cannot be folded back against the body, unlike swordfish and other marlins. They also retain pelvic fins and scales.
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