Flat Needlefish Identification Guide

Key identification features

• Body noticeably flattened side-to-side (laterally compressed), unlike the round cross-section of most needlefish
• Elongated toothy beak formed by both jaws, typical of the needlefish family
• Series of dark, irregular blotches or bars along the silvery sides, more prominent than in many relatives
• Greenish-blue back fading to bright silver on the flanks and belly
• Can reach over 3 feet, with a slim but deep-bodied profile that looks noticeably blade-thin when viewed head-on

Common look-alikes

• Houndfish: much bulkier and round-bodied rather than flattened, with a heavier, more robust jaw
• Atlantic Needlefish: round in cross-section and generally plainer, lacking the bold blotched pattern
• Keeltail Needlefish: smaller overall and shows lateral keels on the caudal peduncle that the Flat Needlefish lacks

Where you'll see one

Found in warm coastal and open ocean waters worldwide, often near the surface over reefs and in open water, sometimes venturing into brackish estuaries and occasionally seen leaping clear of the water when pursued by larger predatory fish.