The simplest way of identifying a Striped Marlin is by it's clearly visible laeral line as opposed to the Blue Marlin which it's commonly confused with. The Dorsal fin usually equals or exceeds it's body depth and the Striped Marlin has a longer lower jaw than both the Blue & Black Marlin. Another distinguishing feature is that the Striped Marlin can fold it's pectoral fin flush against it's body unlike the Black Marlin which due to calcification has permanantly erect pectorals. Last but not least if you have time boatside you should be able to count anywhere between 12 to 20 light blue/lavender stripes along it's body. If all else fails take a good pic and show it to someone at the club although that may also cause confusion

Bart
