Tautog
Tautog (Tautoga onitis) is a saltwater species. The first thing to check: thick rubbery lips over prominent conical front teeth, backed by crushing plates for prising and breaking shellfish. The look-alike to rule out is Cunner: cunner are far smaller with a pointed snout and thin lips, and never carry the white chin patch.
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| Scientific name | Tautoga onitis |
|---|---|
| Also called | blackfish, tog, whitechin |
| Water | Saltwater |
| Group | Wrasse |
| Temperature | Feeds best between 50 and 62 °F, cooler than most inshore species. Largely inactive above the low 70s and below about 40 °F. |
How to identify a Tautog
- Thick rubbery lips over prominent conical front teeth, backed by crushing plates for prising and breaking shellfish.
- A blunt, steeply sloped forehead on a heavy, compact body.
- Mottled dark green-brown to near black, with a white chin patch on large males — the origin of the name whitechin.
If you would rather not work through a key on a wet deck, photograph the fish and let the app name it — you get the common and the scientific name back, and the record is filed before you release.
Fish it is mistaken for
| Species | How to tell them apart |
|---|---|
| Cunner | Cunner are far smaller with a pointed snout and thin lips, and never carry the white chin patch. |
| Black Sea Bass | Sea bass have a trailing filament on the top of the tail and pale spots in rough rows; tautog have neither. |
Side-by-side comparisons
Read the full entry for Cunner and Black Sea Bass.
Where it lives
The Atlantic coast from Nova Scotia to South Carolina. Lives hard against structure — rock piles, jetties, bridge rubble, mussel beds and wrecks — moving to deeper structure as inshore water cools.
Temperature
Feeds best between 50 and 62 °F, cooler than most inshore species. Largely inactive above the low 70s and below about 40 °F.
The conditions that matter
Tautog are the coldest-water inshore fish on the northeast coast, and the best fishing is autumn into early winter as water drops through the 50s. Everything depends on staying on the piece, so tide and current decide whether a spot is fishable at all rather than whether the fish are feeding. Water temperature per catch is what tells you when to start and when the season is done.
Global Fishing League records 18 weather and water readings against every catch automatically — tide stage, barometric pressure, water temperature, salinity, dissolved oxygen, chlorophyll, swell, current, moon phase and more, taken at your GPS position at the moment you log the fish. Over a season that turns a hunch about tautog into a pattern you can read.
See every reading recorded with a catch, or the guides to what each reading means.
Size limits, bag limits and seasons
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.
What the app does do is make your side of it accurate: every catch carries a length measured from the photograph, a GPS position and a timestamp, exportable if you ever need to show your work for a tournament or a record claim. It is also what a Global Fishing League entry is built from — a record that verifies itself, without publishing where you caught the fish.