New Hampshire state waters, out to 3 miles
Filleted/skinned groundfish must retain 2 sq in of skin for ID.
NH F&G 2026 · checked · the official rulebook is the final word
Often mistaken for
Summer flounderLeft-facing with a big toothy mouth. Tell them apart
Windowpane flounderThin enough to see through. Tell them apartKeep the wrong fish and its rule applies.
New Hampshire state record
NH Fish & Game Verified Record Saltwater Fish · checked 2026-08-23
How to tell it
RIGHT-facing thick flatfish with a small mouth and straight lateral line; muddy black-brown. More on the winter flounder page: every state’s rule, the records, and how anglers catch it.
Winter flounder in other states8 rulebooks
Questions anglers ask5
What is the size limit for winter flounder in New Hampshire?
12 in TL min. Measured as total length: snout to the tip of the tail, tail lobes squeezed together.
How many winter flounder can you keep in New Hampshire?
8 fish/day.
When is winter flounder season in New Hampshire?
Open year-round.
What is the New Hampshire record winter flounder?
3 lb 3.68 oz, Hampton River, Hampton (2014).
How current is this New Hampshire winter flounder 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.
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