The Fishing ReportThe Fishing Report

Fishing seasons & conditions by region

Haddock vs Pollock

Two fish anglers routinely mix up. Here is what actually separates them — and when and where you are likely to meet each.

See live fishing conditions →

Side by Side

Haddock (Melanogrammus aeglefinus) fish identification illustration

Haddock Melanogrammus aeglefinus

Typical: 16–24 in, 2–5 lb

Quickest tell: The dark lateral line plus the black 'devil's thumbprint' over the pectoral fin instantly separate haddock from cod (pale/white lateral line, overhanging upper jaw) and from green forked-tailed pollock.

  • dark gray back, silver sides, dark (black) lateral line
  • prominent black 'thumbprint' blotch above the pectoral fin
  • three dorsal fins, the first tall and pointed
  • small chin barbel present
  • slightly forked-to-square tail; no overhang/spotting like cod

Full Haddock guide — season, gear and rules →

Pollock (Pollachius virens) fish identification illustration

Pollock Pollachius virens

Typical: 20–32 in, 4–15 lb

Quickest tell: A greenish back, jutting lower jaw, near-absent chin barbel, and a clearly forked tail separate pollock from the barbeled, square-tailed cod and haddock.

  • olive-green to brownish back, silvery sides
  • three dorsal fins and two anal fins
  • pale, only slightly curved lateral line
  • projecting lower jaw with a tiny or absent chin barbel
  • distinctly forked tail (unlike cod's and haddock's squared tail)

Full Pollock guide — season, gear and rules →

When Each Is Running July — current month highlighted

JanFebMarAprMayJunJulAugSepOctNovDec
Haddock
Pollock
Peak Good Fair Slow

Where Haddock and Pollock Overlap

Both run in Northeast — that is where telling them apart actually matters.

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