Stardew Valley Flounder Guide: How to Catch Them and Why They Are Secretly Powerful

I have spent more hours than I care to admit wadding through the saltwater of Pelican Town, and if there is one thing I have learned, it is that players often overlook the humble Flounder. For a long time, it was just another mid-tier fish that you caught while waiting for a Pufferfish to bite.

Since the massive 1.6 update, I have discovered that the Flounder has actually become one of the most strategic assets in the game. Whether you are aiming for a perfect fishing collection or trying to build a massive industrial profit engine, this flat little guy is essential.

Where to find a Flounder and when to go

If you are looking for a Flounder, you need to head to the saltwater. I usually find them easiest to grab at the Beach in Pelican Town or on the Beach Farm during the Spring and Summer. They are available for a good chunk of the day, specifically from 6 am to 8 pm, and the weather does not matter at all. If you have unlocked Ginger Island, you can actually catch them year-round in the ocean areas, which is a life-saver if you forgot to stock up before Fall hit.

• Pelican Town Beach: Head south of town and cast into the deep blue.
• Ginger Island West: The ocean area to the west and south is perfect for catching them in any season.
• The Pirate Cove: You can find them inside the cave regardless of the weather outside.
• Traveling Cart: If you are truly desperate, you can check with the merchant for a price between 300 and 1,000 gold.

If you are just starting out and need help with other early species, you might also want to figure out how to catch Shad, so you’ll have consistent fish.

The math behind Iridium quality specimen

I used to think that quality was just about luck, but the game actually uses a very specific mathematical model to determine if your catch is Normal, Gold, or Iridium. To get the best fish, you have to maximize the Distance from Land variable. The game calculates a size factor for every fish you hook, and it looks like this:

fishSize = Distance / 5 × Skill + 2 / 10 × Random / 100

In my experience, the secret to high quality is the Distance variable, which is capped at 5 tiles. If you stand on the end of the east pier (the one you fix with 300 wood) and cast at maximum strength, you are likely hitting Zone 5. This is where the magic happens.

• Normal Quality: This happens when your fishSize is less than 0.33.
• Silver Quality: This is for values between 0.33 and 0.66.
• Gold Quality: You will get a Gold fish if the value is 0.66 or higher.
• Iridium Quality: You cannot get this through the base math alone; you must get a Perfect Catch or use a Quality Bobber to bump a Gold fish up to Iridium.

Making money with your catch with version 1.6 machines

The real reason I am obsessed with Flounder right now is the new equipment introduced in the 1.6 update. If you are still just selling your fish raw, you are leaving so much money on the table. I highly recommend building a Bait Maker and a Fish Smoker as soon as you can.

• The Bait Maker: If you put one Flounder in here, you get 5 to 10 Targeted Baits. This is huge because it multiplies the spawn rate of the Flounder by 1.66 and forces the game to check the first three fish in the spawning queue. If a Flounder is there, you hook it.
• The Fish Smoker: This machine doubles the value of your fish. If you have the Angler profession and the Artisan profession, the multiplier is actually a massive 2.8x.
• The Profit Calculation: I found that an Iridium Flounder (300g with Angler) turns into a Smoked Flounder worth 840g once you apply the Artisan bonus.

Why the Flounder is the gatekeeper of Legendary fishing

You might be wondering why you should save these fish instead of smoking them all for profit. The answer is Seafoam Pudding. This is the only recipe that specifically requires a Flounder (plus a Midnight Carp and Squid Ink), and it gives you a massive +4 Fishing buff.

In version 1.6, I discovered you can use this pudding to reach what I call the 308-Pixel Bar Build. This makes the green bar in the fishing mini-game so large that it covers more than half the screen, making it nearly impossible for even the toughest fish like octopus to escape. To hit this absolute maximum, I use an Advanced Iridium Rod with two Cork Bobbers, Deluxe Bait, a Master Enchantment from the Forge, and Seafoam Pudding prepared with Qi Seasoning.

Sebastian and the hidden lore of the Sinker

I always thought it was interesting that Sebastian is the only villager who likes receiving a Flounder as a gift. Most other people in town actually dislike or even hate it. If you look at the game’s code, the Flounder is categorized with a Sinker AI pattern. It literally hides at the bottom of the ocean and stays there, which I think is a perfect metaphor for Sebastian.

I often find him standing on the pier in the rain, which is one of the few times he actually leaves his basement. There is a popular community theory that his affinity for the fish is a reference to the Disney character, but I think it goes deeper. The Flounder is a fish that stays out of the spotlight and keeps to the shadows, just like him.

Managing your Flounder Fish Pond

If you want a steady supply of these fish without constantly heading to the beach, I recommend building a Fish Pond. They reproduce every two days, and they actually have a chance to give you Sea Jelly once the population hits 7.

• Population 3 Quest: They will ask for 3 Coral to expand.
• Population 5 Quest: They will request 1 Sea Jelly.
• The Sea Jelly Loop: Since you need Sea Jelly to craft a Fish Smoker, raising Flounders is actually the best way to industrialize your entire fishing operation.

By keeping a few of these in a pond and using the roe for extra cash, you can easily maintain a stock of Seafoam Pudding ingredients while slowly building up your fish empire. It might not be the flashiest fish in the sea, but I can promise you it is one of the most useful.