How to Catch Redfish in Aquaculture Cage Waters: Tips from a Seasoned Angler

Let me tell you—there’s nothing quite like the thrill of hooking a redfish. These bad boys are aggressive eaters, put up a fight that’ll make your arms ache, and taste incredible when you cook ’em up. But if you’re targeting them around aquaculture cages? That’s a whole different ball game (in the best way). I’ve spent way too many weekends chasing redfish near fish farms, and let’s just say I’ve learned my lesson the hard way (more on that broken line disaster later). If you’re ready to up your redfish game, keep reading—this guide’s got all the real-deal tips you need.

First, Let’s Get to Know Your Target: Redfish Habits

Before you even grab your rod, you need to understand what makes redfish tick. These guys are schooling fish with some serious migration vibes. In early fall, the big mamas and papas (we’re talking trophy-sized redfish) start moving from deep waters toward shallow coastal areas and river mouths to spawn. That’s your golden window—you’ll often spot them hanging around estuaries or the mouths of protective jetties. But here’s the thing: they’re not just hanging out for fun. Those aquaculture cages? They’re like a 24/7 buffet for redfish. Caged fish drop food through the nets, and wild redfish (plus some escapees) love hiding under the cages where it’s safe and there’s always a snack.

Oh, and let’s talk about their appetites. Redfish are carnivorous omnivores with stomachs like black holes. I’ve seen studies where they’ll eat up to 40% of their body weight in a single feeding frenzy. Their go-tos? Shrimp (especially brown shrimp), squid, anchovies, and saury. And when they strike? They strike hard. I once had a 3kg redfish snap an 8lb monofilament line like it was nothing. Let’s just say I switched to Berkley FireLine after that—game changer.

Gear Up: The Right Tackle for Redfish Near Cages

You can’t catch a fighter with a wimpy rod. Let’s break down the gear that’s actually worked for me (and saved me from losing too many lures).

Rod & Reel

First, your rod. I swear by a 1.8–2.1m solid fiberglass casting rod or a stiff spinning rod. Why? Because redfish will yank that rod out of your hands if you’re not careful. A solid rod gives you the backbone to fight them without breaking. For the reel? Go for a 3000-series or larger spinning reel. It needs to hold enough line to handle those long runs redfish love to make when they’re hooked.

Line & Leader

Main line: 0.5–0.6mm (that’s about 12–15lb test) high-quality monofilament. It’s strong enough for most fights but still has enough stretch to absorb shock. Now, the leader—this is non-negotiable. Redfish have rough mouths, and those cage nets? They’ll saw through regular line in seconds. I use 0.3–0.4mm Berkley FireLine (or “mow king silk” if you’re using the local stuff) for my leader. It’s abrasion-resistant and can handle the sharp edges of cages and rocks.

Hook & Sinker

Hook: I’m a huge fan of Gamakatsu 14–16 size Maruse hooks. They’re sharp, strong, and hold onto redfish like glue. Sinker: 40–50g (1.4–1.8oz) egg sinkers or pyramid sinkers. The pyramid ones are better if there’s current—they stay put on the bottom. As for rigging? You can do sinker above hook or sinker below hook. I prefer sinker below hook (also called a “dropper rig”) because it keeps the bait closer to the bottom where redfish hang out under the cages.

Find the Hotspots: Where to Fish Near Aquaculture Cages

Not all cage areas are created equal. Here’s where I’ve had the most luck:

• Fish farms (aquaculture cages): This is #1 for a reason. The area under and around the cages is a redfish playground. Caged fish drop food, so redfish hide there to pick up scraps. Just be careful not to get your hook stuck in the nets (more on that later).
• Docks & jetties: Redfish love structure. Docks and jetties have barnacles, algae, and small fish hiding in the cracks—perfect for ambushing prey. Look for areas where the water is a little deeper (3–5m) near the structure.
• River mouths & estuaries: During spawning season (early fall), redfish pile into these areas. The mix of fresh and saltwater brings in food, and it’s a safe place to spawn.

Best Bait for Redfish Near Cages

Redfish aren’t picky, but some baits work better than others. Here’s my top 3:

• Shrimp: Fresh or frozen, shrimp is redfish catnip. Hook ’em through the tail or the head—just make sure the hook is buried so they can swim naturally (or at least look like a snack).
• Anchovies: These little guys are cheap and easy to find. Cut ’em into chunks if they’re big, or use whole if they’re small. Redfish love the oily scent.
• Saury: If you can get your hands on fresh saury, use it. It’s a local favorite for redfish and holds up well in the water.

Pro tip: Don’t be afraid to switch baits if you’re not getting bites. Redfish can be finicky, and what works one day might not work the next.

Timing Is Everything: When to Fish for Redfish

Redfish are most active during two main times:

• Spawning season (early fall): This is when the big ones are in shallow water. Look for them in river mouths and estuaries.
• Year-round (but better in warm months): From May to October, redfish are feeding heavily to bulk up for winter. This is the best time to target them near aquaculture cages.

Also, pay attention to the tide. Redfish feed more during incoming and outgoing tides—they follow the water into shallow areas to hunt. I usually plan my trips around high tide or low tide transitions.

Pro Angler Tips: How to Fish Near Aquaculture Cages

Okay, let’s get to the good stuff—actual fishing techniques. Here’s my step-by-step:

Step 1: Rig Your Bait

Thread your bait onto the hook (make sure it’s secure—redfish will strip it off if it’s loose). Attach your sinker to the main line, then tie on your leader and hook. I use a simple improved clinch knot for the leader—strong and easy to tie.

Step 2: Cast Near the Cages

Cast your line along the edge of the fish farm or into the channels between the cages. Don’t cast directly into the cages—you’ll get your hook stuck (trust me, I’ve done this 10+ times). Let the sinker hit the bottom, then reel in a little to tighten the line. Attach a bite alarm or a bell to your rod tip—redfish hit hard, but sometimes you’ll miss the strike if you’re not paying attention.

Step 3: Fight the Redfish (Don’t Panic!)

When that bell rings or your rod bends over? Don’t yank it—you’ll break the line. Instead, let the redfish run for a few seconds (this is called “letting it take”). Then, set the hook hard by pulling up on the rod. Now the real fight begins.

Redfish are strong—they’ll make long runs, jump out of the water, and try to wrap your line around the cage nets or rocks. Here’s how to handle it:

• Adjust your drag: Your reel’s drag should be set so the line gives a little when the fish pulls. If it’s too tight, the line will break. If it’s too loose, the fish will take all your line.
• Use the rod’s flexibility: Keep the rod tip up—this helps absorb the shock of the fish’s runs. Don’t point the rod at the fish (that’s a common mistake).
• Take your time: A 3kg redfish can take 10–15 minutes to land. Don’t rush—let it tire itself out. Once it’s close to the surface, use a net to scoop it up (don’t try to lift it by the line—you’ll break it).

Important Rules & Safety Tips

Fishing near aquaculture cages comes with some rules—break them, and you’ll either lose your gear or make a lot of enemies. Here’s what you need to know:

Don’t Damage the Cages

This is non-negotiable. If your hook gets stuck in the cage net, DO NOT yank it. Cut the line immediately. If you tear the net, the farmer will lose fish (and probably yell at you). I’ve seen guys get banned from fish farms for this—don’t be that guy.

Be Quiet on Fish Farms

Fish farms have narrow walkways and lots of caged fish. Walk slowly, don’t run, and keep your voice down. If you scare the caged fish, they’ll stop eating, and the farmer will not be happy. Also, don’t lean on the cages—they’re not as strong as they look.

Safety First

Always wear a life jacket when fishing near water—especially on fish farms. The walkways can be slippery, and if you fall in, the water might be cold or have strong currents. Also, keep your hooks covered when you’re not using them—you don’t want to hook yourself (or a friend).

My Redfish Horror Story (and What I Learned)

Let me tell you about the time I almost lost a trophy redfish (and my favorite rod). I was fishing near a fish farm, using a regular monofilament leader. I cast out, and within 2 minutes, my rod was bent in half. I thought, “This is it—my big one!” But then the redfish made a run toward the cage net. I panicked and pulled hard, and *snap*—my leader broke. I watched that redfish swim away like it didn’t even care. That’s when I switched to FireLine. Now, I never have that problem. Moral of the story: invest in good gear—your future self (and your trophy redfish) will thank you.

Wrap-Up: Go Catch Some Redfish!

Alright, that’s everything I know about catching redfish near aquaculture cages. Remember: the key is to understand their habits, use the right gear, and be respectful of the fish farms. I’ve had some of my best fishing days near those cages—caught a 4kg redfish last summer that still hangs on my wall. Now it’s your turn. Grab your rod, load up on shrimp, and head to the nearest fish farm. Who knows? You might land the biggest redfish of your life.

Oh, and if you do catch a big one? Tag me in your photos— I’d love to see it! Tight lines, everyone!