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Species · Lookalikes

Atlantic Chub MackerelorSpanish Mackerel

Two fish anglers mix up. Here is what separates them, and what each one’s rules are in your state.

Studio photograph of an Atlantic Chub Mackerel (Scomber colias), side view, on a white background
Atlantic Chub MackerelScomber colias
Studio photograph of a Spanish Mackerel (Scomberomorus maculatus), side view, on a white background
Spanish MackerelScomberomorus maculatus

Rules for both fish from 14 state rulebooks, checked Sep 18, 2026. Every rule names its source and the day it was last checked; the official rulebook is the final word.

How to tell them apart

Atlantic Chub Mackerel

Small mackerel with wavy lines on the back AND dusky spotting below the midline; big eye.

Spanish Mackerel

Gold-bronze spots on the flanks, no lateral-line dip, black front dorsal patch; smaller than a king.

Spanish mackerel, next to Atlantic chub mackerel: gold spots, larger.

Side by side

Atlantic Chub MackerelSpanish Mackerel
Scientific nameScomber coliasScomberomorus maculatus
Also calledChubSpanish
WatersNearshoreNearshore
Heaviest state record2 lb 5.28 oz · Connecticut (2021)13 lb · North Carolina (1987)
On the tableRich and dark — grill or smoke it fresh.Very good fresh or smoked; oily, doesn't keep long.
Rules of its own in1 states14 states

Rules for

Every state, both fish

The two fish are regulated differently in 14 of 14 states with a rule for either. In North Carolina, Atlantic chub mackerel is No size limit, No bag limit and Spanish mackerel is 12" FL min, 15 per person per day. Call the fish wrong and you keep a short one or throw back a legal one.

StateAtlantic Chub Mackerel: size · bag · seasonSpanish Mackerel: size · bag · season
AlabamaNot specifically regulated; the state’s default for unlisted species applies.No size limit15 per personOpen year-roundOpenAL MRD 2026 · checked
DelawareNot specifically regulated; the state’s default for unlisted species applies.14 in min15 per dayOpen year-roundOpenDE DNREC 2026 · checked
Florida (Atlantic)Not specifically regulated; the state’s default for unlisted species applies.12 in fork length min15 per personOpen year-roundOpenFWC 2026 · checked
Florida (Gulf)Not specifically regulated; the state’s default for unlisted species applies.12 in fork length min15 per personOpen year-roundOpenFWC 2026 · checked
GeorgiaNot specifically regulated; the state’s default for unlisted species applies.12 in fork length15 per person per dayOpen year-roundOpenGA DNR CRD 2026 · checked
LouisianaNot specifically regulated; the state’s default for unlisted species applies.12 in fork length15 per personOpen year-roundOpenLDWF 2026 · checked
MarylandNot specifically regulated; the state’s default for unlisted species applies.14 in min15Open year-roundOpenMD DNR 2026 · checked
MississippiNot specifically regulated; the state’s default for unlisted species applies.12 in fork length minimum15 per person per dayOpen year-roundOpenMS DMR 2026 · checked
New JerseyNot specifically regulated; the state’s default for unlisted species applies.14 in min10Open year-roundOpenNJ DEP 2026 · checked
New YorkNot specifically regulated; the state’s default for unlisted species applies.14"15Open year-roundOpenNY DEC 2026 · checked
North CarolinaNo size limitNo bag limitOpen year-roundOpenNC DMF 2026 · likely · checked 12" FL min15 per person per dayYear-roundOpenNC DMF 2026 · checked
South CarolinaNot specifically regulated; the state’s default for unlisted species applies.12 in fork length15/dayOpen year-roundOpenSC DNR 2026 · checked
TexasNot specifically regulated; the state’s default for unlisted species applies.14 in total length15Open year-roundOpenTPWD 2026 · checked
VirginiaNot specifically regulated; the state’s default for unlisted species applies.14 in min15 per personOpen year-roundOpenVMRC 2026 · checked

In the app

Point the camera at the fish and Chum names it before you take the picture, Atlantic chub mackerel or Spanish mackerel, with the right rules for the water you’re standing in. No signal needed.

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Questions anglers ask

How do you tell Atlantic chub mackerel from Spanish mackerel?

Atlantic Chub Mackerel: Small mackerel with wavy lines on the back AND dusky spotting below the midline; big eye. Spanish Mackerel: Gold-bronze spots on the flanks, no lateral-line dip, black front dorsal patch; smaller than a king. Spanish mackerel, next to Atlantic chub mackerel: gold spots, larger.

Which gets bigger, Atlantic chub mackerel or Spanish mackerel?

Spanish Mackerel. The heaviest state record we hold is 13 lb in North Carolina; the heaviest Atlantic chub mackerel record is 2 lb 5.28 oz in Connecticut.

Which is better to eat, Atlantic chub mackerel or Spanish mackerel?

Atlantic Chub Mackerel: Rich and dark — grill or smoke it fresh. Spanish Mackerel: Very good fresh or smoked; oily, doesn't keep long.

Do Atlantic chub mackerel and Spanish mackerel have the same limits?

Not everywhere. They differ in 14 state rulebooks. North Carolina: Atlantic chub mackerel No size limit, No bag limit, Spanish mackerel 12" FL min, 15 per person per day; Alabama: Atlantic chub mackerel no rule of its own, Spanish mackerel No size limit, 15 per person; Delaware: Atlantic chub mackerel no rule of its own, Spanish mackerel 14 in min, 15 per day; Florida (Atlantic): Atlantic chub mackerel no rule of its own, Spanish mackerel 12 in fork length min, 15 per person; Florida (Gulf): Atlantic chub mackerel no rule of its own, Spanish mackerel 12 in fork length min, 15 per person; and more in the table on this page.