Telling them apart
Scup vs Pinfish
Look at the shoulder. A pinfish has a distinct dark spot just behind the gill cover and gold horizontal stripes. A scup has neither — plain iridescent silver with faint dusky lines and no shoulder spot.
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Side by side
| What to look at | Scup | Pinfish |
|---|---|---|
| Scientific name | Stenotomus chrysops | Lagodon rhomboides |
| Shoulder spot | None | A distinct dark spot |
| Stripes | Faint dusky horizontal lines | Clear gold horizontal stripes |
| Bars | None | Faint darker vertical bars |
| Dorsal spines | Sharp | Very sharp — the pins |
| Range | Cape Cod to the Carolinas | Mid-Atlantic to Texas, strongest in the South |
| Usual role | A target and good eating | Mostly live bait |
Why the difference matters
They overlap through the mid-Atlantic and are both deep, silver, spiny porgies that swarm the same structure. Scup carry real minimum sizes and bag limits through New England while pinfish are effectively unmanaged bait, so the shoulder spot is worth a glance before a cooler gets filled.
Size limits, bag limits, slot limits and seasons are set by your state wildlife agency — and for many offshore and migratory species by federal regulators — and on many waters they differ from the statewide rule. They also change between seasons. Check the current regulations for the exact water you are fishing before you keep a fish — we do not republish limits here, because a number that is a season out of date is worse than no number.
Full entries
Each fish has its own page with every field mark, the rest of its look-alikes, where it holds and the conditions it feeds in: Scup and Pinfish.
Or skip the key entirely — photograph the fish and Global Fishing League names the species, returns the scientific name with it, and files the catch with the tide, pressure, water temperature and everything else it came from.