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Photo of a Blueback Herring

Species profile

Blueback Herring

Alosa aestivalis

Bony fishIUCN: Vulnerable144 iNat observations

At a glance

Blueback Herring (Alosa aestivalis) is an IUCN Vulnerable bony-fish species regulated in 13 of 66 jurisdictions tracked by CatchRules across the U.S. and Canada.

The strictest bag limit is 1 (South Carolina); the most generous is 50 (New York).

Confirmed by 86 research-grade iNaturalist observations, with Maryland, New York, and Massachusetts the top jurisdictions by observation count.

Notable details

  • Named for its bright blue-green back and silvery sides.
  • Anadromous — adults migrate upriver into freshwater each spring to spawn.
  • Typically grows to 10–12 inches long.
  • Has a single dark spot just behind the gill cover.
  • A critical forage species for striped bass, bluefish, and many coastal predators.

Background

The blueback herring or blueback shad (Alosa aestivalis) is an anadromous species of herring from the east coast of North America, with a range from Nova Scotia to Florida. Blueback herring form schools and are believed to migrate offshore to overwinter near the bottom.

Background excerpt adapted from Wikipedia's Blueback Herring article (CC BY-SA). Visit Wikipedia for the full entry.

Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.