Key Identification Features
- These large tunas have a streamlined body shape with distinctive coloration: brilliant blue-green on the back, silvery on the sides, and whitish on the belly.
- Almost its entire body is scaleless, with the only exceptions being the lateral line and a distinct structure called a "corselet"; this species also lacks a swim bladder.
- After an individual dies, its characteristic markings often fade and become less prominent, but the species can still be identified by the presence of 2 or more spots positioned over the pelvic fins.
- It has very few scales, and features 2 or more dark spots between its pelvic and pectoral fins.
For instant identification in the field, use the iNature app — AI-powered, works offline.
