Weakfish in Connecticut: The Comeback Story and How to Catch Them
Weakfish — also called sea trout, grey trout, or tiderunners — were a major part of Connecticut's saltwater fishery through the 1980s and early 1990s. Big fish in the 8–12 pound range were caught regularly throughout Long Island Sound. Then the population collapsed, and they've been largely absent from CT waters for two decades. That's starting to change. Weakfish are showing up again in Connecticut, cautiously and in small numbers — but they're here, and anglers who know what to look for are catching them.
Weakfish Status in Connecticut
The weakfish collapse was severe. The Atlantic States Marine Fisheries Commission estimates the population fell over 90% from peak levels. The cause is debated — overfishing, predation by spiny dogfish, habitat loss, menhaden management, or some combination. Federal and state management has been restrictive for years.
**Current situation (2026):** Weakfish populations remain well below historical levels, but the ASMFC has documented modest signs of recovery in recent stock assessments. Weakfish are showing up in CT bycatch reports and angler catches more frequently than in the late 2000s and 2010s. They're not abundant — catching one is still notable — but dedicated anglers targeting them are finding fish.
**Best bets for CT:** The eastern Sound (Niantic Bay, Stonington, Mystic) and the Thames River have historically been more productive weakfish areas than western CT. Weakfish favor the estuarine-influenced areas with access to deeper water.
Habitat and Behavior
Weakfish are estuarine fish. They feed in river mouths, tidal creeks, and nearshore structure, and they're most active at night and during early morning and evening hours.
**Water temperature:** Weakfish prefer water temperatures in the 60–75°F range. They arrive in CT waters later than striped bass (usually late May to early June) as the Sound warms. They leave before the fall cooling — most are gone from CT by early October.
**Feeding:** Weakfish are opportunistic predators that eat shrimp, crabs, squid, and small baitfish. In estuaries, they key heavily on grass shrimp, sand shrimp, and small silversides. In the Sound, they mix with striper schools and feed on bunker schools at night.
**Night fishing:** Weakfish are more accessible at night than during the day. Under lights on docks and bridges at night, weakfish gather to feed on baitfish attracted to the light. This is the most consistent way to target them when numbers are low, because it concentrates fish.
How to Catch Weakfish in CT
**Under lights at night:** The most reliable technique in CT currently. Find a dock, bridge, or marina with bright lights over water. Weakfish and other night feeders gather at the light edge to pick off disoriented baitfish. A lightly weighted jig (1/4 oz, white or chartreuse, with a soft plastic shrimp or paddle tail body) retrieved slowly through the light boundary is very effective. Flounder, bass, and blues also show up at night lights, so you might not catch what you came for — but the fishing is usually productive.
**Soft plastic jigs on sandy/muddy bottom:** A 3-inch shrimp-pattern soft plastic on a 1/4–3/8 oz jig head worked slowly along the bottom in estuaries and tidal creeks. Dead-slow retrieves, long pauses, and occasional hops. Weakfish often just "sip" the lure — the hookset is gentle and the bite can be easy to miss.
**Shrimp bait fishing:** Fresh or live grass shrimp on a size 2 bait hook, lightly weighted or fished under a float in tidal creeks and estuaries. This is the most traditional weakfish method and still works where fish are present.
**Bucktail jig:** A 1/4–1/2 oz white or yellow bucktail jig fished slowly near the bottom in tidal channels. One of the oldest weakfish presentations, still effective.
**Tackle:** Light spinning gear — 7 foot medium-light rod, 2500–3000 reel, 10 lb braid with a 15 lb fluorocarbon leader. Weakfish have soft mouths (hence the name) — hook them firmly but don't horse them. They'll tear off a hook if you apply too much pressure.
Regulations
Connecticut weakfish regulations reflect the conservation status of the species. As of 2026:
- **Minimum size:** Check current CT DEEP Marine Fisheries regulations — size limits have been restrictive (often 13–16 inches minimum) - **Bag limit:** Very restrictive (often 1 fish per day or fewer) — verify current limits before fishing - **Season:** Check for any seasonal closures
Given the stock recovery status, catch-and-release is strongly encouraged for any weakfish caught in CT waters. These fish are part of a rebuilding population — releasing them matters.
The Atlantic States Marine Fisheries Commission updates weakfish management annually. Current regulations are available at ct.gov/deep under marine fisheries.
What's biting, where, and what's working — every Saturday morning.
Sign Up — Free