Atlantic Needlefish Identification Guide

Key identification features

• Extremely elongated, slender, round-bodied fish usually 1-2 feet long
• Both jaws drawn out into a long, narrow beak lined with numerous fine, needle-like teeth
• Bright iridescent blue-green stripe running along the back, sharply contrasting with silvery-white sides
• Single dorsal and anal fin set far back near the tail, roughly mirroring each other in position
• Bones and lining of the body cavity often appear greenish, a trait shared by needlefish generally

Common look-alikes

• Houndfish: much larger and noticeably bulkier, with a heavier, more robust beak and body
• Flat Needlefish: body is laterally compressed and ribbon-like in cross-section rather than round
• Keeltail Needlefish: smaller and shows distinct lateral keels on the tail base that the Atlantic Needlefish lacks

Where you'll see one

Found in shallow coastal and estuarine waters of the western Atlantic, from bays and inlets to grass flats and harbors, often seen swimming just under the surface in loose groups or singly near shorelines, sometimes venturing into brackish or nearly fresh water.