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You can find groundfish such as cod, haddock and flounders, along with striped bass, bluefish, black sea bass, mackerel, tuna, squid and other seasonal species around Cape Cod. What you encounter depends on the location, depth, bottom habitat and time of year: Cape Cod Bay, Nantucket Sound, the Atlantic-facing outer Cape, estuaries and offshore banks are distinct fishing settings.
What kinds of fish live around Cape Cod?
The region’s fish fall broadly into two groups: groundfish associated with the bottom and more mobile fish that move through the water column or migrate seasonally. NOAA’s Northeast multispecies complex includes 13 species, several of which occur in New England waters.
Groundfish and bottom-associated species
NOAA’s 13-species Northeast groundfish complex includes Atlantic cod, haddock, pollock, Acadian redfish, winter flounder, yellowtail flounder, Atlantic halibut, Atlantic wolffish, white hake, American plaice, witch flounder, windowpane flounder and ocean pout. Their local distribution varies with stock and habitat; inclusion in the regional complex does not mean every species is common at every Cape Cod fishing spot. NOAA’s Northeast multispecies recreational guide describes the group.
Monkfish is another bottom-associated fish found in regional catches. Haddock and cod are generally associated with the seabed, while flounders also live close to the bottom.
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Mobile, schooling and seasonal species
Striped bass and bluefish are prominent mobile recreational fish. Bluefish move north toward Cape Cod as waters warm, according to NOAA. Atlantic mackerel, herring, scup, squid and tuna are also documented among catches in the Cape Cod and Islands region. Black sea bass has become more abundant in Massachusetts waters as conditions have changed. NOAA’s Cape Cod and Islands regional profile describes local catches and fishing opportunities.
Which fish might you find in each area?
There is no single Cape Cod species list that applies to every trip. The water body, depth and bottom type shape what is present; the following is a practical way to think about the differences, not a guarantee of a catch.
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| Setting | What shapes the fish mix | Species to know about |
|---|---|---|
| Cape Cod Bay | Bay conditions and bottom habitat; groundfish are generally associated with the bottom. | Cod, haddock and flounders are among the regional groundfish to know. Local presence varies by season and specific location. |
| Nantucket Sound | Shallower coastal waters and seasonal changes in water temperature. | Black sea bass and other warmer-water species are increasingly relevant in Massachusetts waters; striped bass and bluefish are mobile visitors. |
| Outer Cape and Atlantic-facing waters | Open-ocean conditions and shifting seasonal movements. | Striped bass, bluefish and mackerel may be part of the seasonal mix; offshore trips can encounter tuna. |
| Estuaries and shoreline waters | Nearshore habitat and the movement of mobile fish. | Striped bass and bluefish are notable mobile recreational species. Check shore-specific rules before fishing. |
| Offshore banks | Depth, bottom and distance from shore. | Haddock and other groundfish are associated with Gulf of Maine and Georges Bank waters; tuna and other pelagic fish may occur offshore. |
These are broad regional associations, not guarantees that a species will be present at a particular spot. The NOAA pages on Atlantic cod and haddock describe their wider ranges, including Gulf of Maine and Georges Bank for haddock.
Are cod and haddock still found around Cape Cod?
Atlantic cod
Cod remain part of the regional fishery, but Cape Cod’s name recalls a period when Atlantic cod were much more abundant than they are today. NOAA’s recreational landings database reports 210,000 pounds of recreational cod landings in 2024; that figure is a regional fishery measure, not a forecast of what an individual angler will catch. See NOAA’s Atlantic cod species page.
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- Comprehensive Fish Information: Includes size, weight, location, food quality, and coloring details for accurate species identification
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Haddock
Haddock remain an important fishery species in the Gulf of Maine and on Georges Bank. NOAA reports 1.5 million pounds of recreational haddock landings in 2024. As with the cod figure, this reports recreational landings, not abundance at a particular Cape Cod location or the likelihood of a catch. NOAA provides details on haddock distribution and fishing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How does the season change the fish mix?
Season matters because water temperature and migrations influence which fish are more relevant at a given time. Massachusetts reports declines in cold-water cod and winter flounder and increasing abundance of black sea bass in state waters. NOAA also describes bluefish moving north toward Cape Cod as waters warm. These are broad changes, not a promise that any species will be available on a particular date or at a particular location. See the Massachusetts marine recreational fishing information for state guidance.
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- Easy-to-Use Fish Identification: Features visual illustrations for quickly identifying various freshwater fish, suitable for both beginners and experienced anglers
- 100% Waterproof Construction: Built with high-quality, weather-resistant materials to withstand the rigors of outdoor use, ensuring long-lasting reliability on every fishing trip
- Portable & Lightweight Design: Convenient, travel-friendly size fits in tackle boxes or fishing bags, allowing you to have it on hand whenever you need to identify a new species
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When planning a trip, check current local reports and regulations rather than relying on a fixed “in season” species list. A fish may occur in the region while its open season, size limit or allowable catch differs by water, species and date.
What rules apply to Cape Cod fishing?
Regulations depend on where you fish. Massachusetts state rules apply in state waters; federal NOAA and New England Fishery Management Council measures apply in federal waters. The Massachusetts recreational saltwater regulations page, updated April 28, 2026, lists regulated groundfish including cod, haddock, pollock, redfish, monkfish, winter flounder and yellowtail flounder, among others. It also sets out restrictions involving baited hooks and metal leaders for shore anglers along Cape Cod. Read the current Massachusetts recreational saltwater fishing regulations before going, and consult NOAA and New England fishery management information for federal-water rules.
Do not assume a rule for one species, shoreline or jurisdiction applies to another. Check the current rules for the exact species and place you plan to fish; hook and leader restrictions can matter even when you are fishing from shore.
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