Dog Salmon Herring Identification Guide
A guide to recognizing this silvery, schooling herring by its slender body, single dorsal fin, and keeled belly scales.
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Key identification features
- Slender, laterally compressed body with a silvery white belly and blue-green to olive back
- Single soft-rayed dorsal fin set at the midpoint of the back, without spines
- Deeply forked tail fin with dusky-edged lobes
- Row of sharp, saw-edged scales (scutes) running along the belly from throat to vent
- Large, thin-edged, easily-shed scales that flake off readily when the fish is handled
- Moderate size, typically under 30 cm (12 in), with a rounded, blunt snout and small terminal mouth
Common look-alikes
- True sardines and pilchards: nearly identical body shape; look closely at gill-cover ridging and the number of belly scutes to separate them
- Anchovies: have a longer, more pointed snout that overhangs a much larger, hinge-like mouth, unlike this species' shorter, blunter snout
- Shads: tend to have a deeper, more rounded body profile and a distinct dark shoulder spot behind the gill cover that this herring generally lacks
Where you'll see one
This herring-like fish travels in dense, surface-schooling shoals through coastal, estuarine, and occasionally brackish river-mouth waters, moving inshore seasonally in large numbers to spawn over sand or gravel bottoms before dispersing back offshore.
Frequently asked questions
How can I recognize this herring at a glance?
Look for a slender silvery body, a single soft dorsal fin at midbody, a deeply forked tail, and a row of sharp scutes along the belly.
How do I separate it from an anchovy?
Check the snout and mouth: anchovies have a longer pointed snout and a much larger, hinge-like mouth than this shorter-snouted herring.