Fluke and Summer Flounder Fishing in Connecticut

Fluke Biology and Behavior

Understanding fluke biology makes their behavior predictable. Fluke are flatfish — both eyes are on the same side of a dramatically flattened body. They spend most of their time on the bottom, partially buried in sand or gravel, waiting to ambush prey from below. Fluke are aggressive, fast-moving hunters when striking — they can leap off the bottom to nail prey near the surface. Migration pattern: Fluke overwinter offshore in deep Atlantic water (600–900 feet). They migrate inshore in spring as water temperatures rise, arriving in Connecticut Sound in May–June. They feed aggressively through summer, then migrate back offshore in fall. Best fluke fishing in CT: June through September, peaking in July–August. Structure preference: Fluke prefer sand and gravel bottom with access to structure — edges of channels, drop-offs, near artificial reefs and wrecks, bridge pilings, tidal rips, and any transition from hard to soft bottom. They face into the current and wait for baitfish to be swept to them. Where current breaks create food concentrations, fluke position themselves downstream of the break.

Gear for CT Fluke Fishing

Fluke have a reputation for light bites and for spitting the hook — quality gear helps close the gap. Rod: A medium-action, 6.5–7 foot spinning rod or baitcasting rod with a fast or moderate-fast tip is ideal. Sensitivity matters — you need to feel the fluke pick up the bait. Reel: 3000–5000 size spinning reel with a smooth drag. Fluke fight hard and will peel drag on heavier fish. Line: 20–30 lb braid with a 3–4 foot 20–25 lb fluorocarbon leader. Braid's sensitivity allows you to feel the lightest bites in deep water and fight the current without excessive drift. The fluorocarbon leader provides abrasion resistance against the sandy bottom and is less visible than braid in clear LIS water. Hooks: 4/0–5/0 wide-gap or kahle hooks are standard. Long-shank hooks work well with squid strip bait. Circle hooks are increasingly popular and reduce gut-hooking, which is important for releasing undersized fish (which are common when targeting fluke). Sinkers: Bank sinkers (1–3 oz depending on current and depth) or bucktail jigs weighted appropriately. In strong current, heavier weights maintain bottom contact.

Best Fluke Rigs and Baits

Fluke can be caught on several different rigs, but the flutter rig and bucktail jig are the two most productive for CT Sound fishing. The Fluke Flutter Rig: A two-hook rig above a sinker that presents baits slightly off the bottom. The lower bait is typically a live or fresh spot (killifish or small baitfish), squid strip, or gulp plastic. The upper bait provides additional opportunity. Drift this rig over sandy bottom and channel edges. The Bucktail Jig: A 1/2–2 oz bucktail jig (white or yellow) with a 5-inch Gulp! Alive Squid or Gulp! Shrimp trailer is arguably the most effective fluke presentation overall. Drift while bouncing the jig along the bottom. The combination of bucktail action and Gulp! scent is extremely effective. Baits: Fresh squid strip is the traditional CT fluke bait — a 1-inch wide, 4-inch long strip cut from a fresh squid with a little tail wiggle. Gulp! plastics (Squid, Shrimp, and Swimming Mullet) have largely displaced live bait for many fluke anglers due to convenience and consistent effectiveness. Live killies (mummichogs) are extremely effective for big doormat fluke.

Drift Fishing Technique

Most CT fluke fishing is done by drifting — using the current and wind to move the bait across the bottom at the right speed and depth. Proper drift speed: 0.5–1.5 mph is the ideal drift speed for fluke. Too fast and you're dragging bait away from fish before they can commit. Too slow and the presentation lacks the natural movement that triggers a strike. Adjust drift speed by: choosing anchoring spots relative to wind/current, using a drift sock (parachute anchor) to slow down in strong current. Maintaining bottom contact: You should feel the sinker or jig bumping the bottom occasionally without constantly dragging. In 20–30 feet of water with 1–1.5 oz sinker, you're in the right weight range for most CT Sound conditions. Reading the drift: If bites stop, check your depth and structure. Fluke tend to concentrate along edges (depth changes) rather than on flat, featureless bottom. When you mark fish on the depth finder, note the depth and drift that contour repeatedly. The strike: Fluke often pick up the bait and run with it briefly. Feel two or three taps, then when the line starts moving with authority, sweep the rod firmly. Don't reel until you feel the fish's weight — reeling on the initial tap usually means a missed fish.

Connecticut Fluke Regulations

Fluke regulations in Connecticut are strict and have tightened considerably in recent years due to stock assessment concerns. Always check current regulations at ct.gov/deep before every trip — these change annually and sometimes mid-season. As of recent years: Minimum size: 17.5 inches (minimum length from jaw to tail). Daily limit: 3 fish per angler. Season: Typically May through late September. These regulations mean that on an average trip, most fluke you'll catch are undersized. Measuring every fish precisely before keeping it is not optional. An undersized fluke handled and released properly can survive, but best practices apply: wet hands, minimize air exposure, return head-first into the water. CT's regulations follow the Mid-Atlantic Fishery Management Council and ASMFC recommendations for summer flounder conservation. The rules can change based on annual stock assessments — a good fishery requires respecting the science behind the limits.

Finding Fluke in CT Waters

CT fluke fishing concentrates in several key areas of Long Island Sound. The Race: The extreme eastern end of Long Island Sound near Fishers Island is one of the most productive fluke areas due to the fast tidal currents and hard bottom — a classic fluke environment. The Sill: The shallow area between New Haven and Long Island holds significant fluke populations, particularly along channel edges. Housatonic River mouth: The estuary and river mouth area holds fluke on the incoming tide, particularly in summer when water temperatures peak. Thames River mouth (New London): The meeting of the Thames River with eastern LIS creates productive fluke habitat along the channel edges. Artificial reefs: CT DEEP has established artificial reefs in Long Island Sound that attract fluke along with other species. Reef locations are publicly available on the CT DEEP website. From shore: Shore-based fluke fishing is possible but limited compared to boat fishing. Jetties and piers that access channel edges and current flow are the most productive shore locations for fluke.

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