New Hampshire state waters, out to 3 miles
Head, fins, and tail must remain attached through landing; circle hooks required with bait; federal rules apply in federal waters.
NH F&G 2026 · checked · the official rulebook is the final word
How to tell it
The tail's upper lobe is as long as the body — the whip is the whole ID. More on the common thresher page: every state’s rule, the records, and how anglers catch it.
Questions anglers ask4
What is the size limit for common thresher in New Hampshire?
No size limit.
How many common thresher can you keep in New Hampshire?
No bag limit. Counts toward the Blue/Thresher/Porbeagle Sharks aggregate.
When is common thresher season in New Hampshire?
Open year-round.
How current is this New Hampshire common thresher rule?
Source: NH F&G 2026, last checked Sep 10, 2026. A watchman re-reads the agency's pages nightly. Rules change mid-season by proclamation; the official rulebook is the final word.
In the appPoint the camera at a common thresher in New Hampshire and this rule is on the screen before you take the picture. No signal needed.
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