Speckled Trout Spring Pattern: Complete Guide | Louisiana Fishing Blog
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speckled trout spring pattern

Speckled Trout Spring Pattern: Complete Guide

Speckled trout spring pattern is here! Get the complete guide to their seasonal behavior, dominant conditions, primary forage and where you can catch them.


Speckled Trout Spring Pattern: What You Need To Know 

It's that time of year when the grass is growing greener, flowers are blooming and the weather is just plain nice outside!

Perhaps you're getting your boat ready because the fishing is stepping up and you want to know where some trout are.

Well, you've come to the right place, not just to find good fishing spots, but find good fishing spots on your own.

So, let's get started by detailing the speckled trout spring pattern in these steps: 

  • The Big Picture
  • The Winter Pattern
  • When Spring Begins
  • Dominant Weather
  • Primary Forage
  • Example Locations

It's very important you take in all of this information, in the order it is given, and not skip around.

Just as everything in the marsh is interconnected, so is the information in this article!

It's key to your success that you take the time to go over everything here, in the order it is presented. 

Otherwise, you risk missing out on key details your fishing trips would suffer without.

Pressing on!

Why See The Big Picture?

The marsh is like a giant puzzle, with things like conditions and fish behavior being the smaller pieces you must put together.

Perhaps you've put together a few puzzles and know you can look at the box it came in to see what it looks like when finished. 

solving puzzle of speckled trout spring pattern

Without that "bigger picture" it'd be pretty hard to identify the pieces you need to complete the puzzle because you'd have no idea what you're putting together in the first place!

The Bigger Picture of the Speckled Trout Spring Pattern

It's simple:

Speckled trout have woken from their winter slumber deep inside the marsh and are preparing for the summertime spawn by eating a lot and migrating towards saltier water outside of the marsh.

Pretty easy, right? But how did they end up in the marsh in the first place?

Let's cover that next.

Brief Rundown Of The Speckled Trout Winter Pattern

During the winter time, when water temps were in the mid-40s to low-50s, speckled trout were found hiding out in deep and stable "holes" inside the marsh.

It's in these spots they hunkered down to hide from rapidly dropping water levels and temperatures brought on by cold fronts.

cold fronts disrupt speckled trout spring pattern

Once the front passed and weather stabilized, they'd come out to feed, mostly on demersal finfish since the fall shrimp migration has long since been over.

When they do, it will be for short periods of time, since they are in "survival mode" and don't have to do anything but make it through the winter.

But, with the coming of spring, their priorities change.

Speckled Trout Spring Pattern Begins

The spring pattern for speckled trout begins in March or April, depending on a couple conditions:

  • Warming water temps
  • Increasing photoperiod

Important Details

To be clear, we like to see water temperature stabilized in the 60s, not brief spikes of warm weather.

stable and rising water temperature of speckled trout spring pattern

A great example of stable, but rising, water temperatures. Note the time period.

After that, we look for the photoperiod to grow longer (photoperiod is just a fancy ten dollar word describing the length of day).

Dominant Weather Patterns

Just like winter, the dominant weather pattern of the speckled trout spring pattern is the cold front.

Several conditions change when they sweep across the marsh:

  • Water Clarity
  • Water Levels
  • Water Temperature
  • Light Conditions

Though not all cold fronts are the same, they all tend to drop the water level, cool it down, make it dirty (though not everywhere), and cause light conditions to go from overcast to bluebird. 

As they do, speckled trout ​speckled trout will react accordingly, as they did during the winter pattern.

  • Knowledge Bomb

By now you're probably thinking, "Light conditions?!" 

Yes, this is a condition often overlooked by inshore anglers, though it's a huge player in how fish feed, especially for speckled trout.

Want to learn why trout like certain light conditions over others? Just click here.

Don't Forget Rain!

Rain is a big factor we must pay attention to!

No, not the rain landing in the marsh, but rain that's been falling across the United States all winter long, and the snow that melts once spring arrives.

All that water eventually drains to the Mississippi River and will come our way to Louisiana, raising the river level as it does.

This additional river water flows across the marsh and open bays, causing speckled trout to depart for cleaner and saltier waters.

If there's enough rain, spillways will be opened, dumping additional river water into the surrounding area.

fall river satellite image
satellite image of high river water during speckled trout spring pattern

Primary Forage

So far we know how river water, cold fronts and the need to spawn will cause speckled trout to behave.

But what about food?

Speckled trout have to eat, and knowing what they will eat is key to knowing where they will be.

croakers is primary forage during speckled trout spring pattern

Brown Shrimp Migration

During the spring, especially in May, there's a strong run of brown shrimp through the marsh.

This is because they're leaving the marsh for the Gulf of Mexico, where they will spawn and send small, baby shrimp into the marsh where they grow and start the process all over again.

During this migration brown shrimp become vulnerable to hungry speckled trout.

Pelagic Finfish

It's also during the speckled trout spring pattern we see juvenile pogies (aka Gulf Menhaden) and finger mullet swimming about, a product of their respective species winter spawn.

gulf menhaden

Bite size pogies like this guy are irresistible to speckled trout.

These fish are typically found in open water near the surface, sometimes relating to a shoreline, but not always.

The term "pelagic" is not commonly used in inshore fishing.

But, it's being used here to differentiate pogies and mullet from demersal species like violet gobies, cocahoes (aka killifish), and croakers.

Since they both swim and feed in different parts of the water column, they both influence trout behavior in different ways.

In turn, this influences the tackle, lures and presentation used to catch those trout.

Demersal Finfish

These are baitfish that live and feed on or near the bottom of the water.

These include:

  • Violet Gobies
  • Gulf Killifish (Cocahoes)
  • Croakers
  • Pinfish
  • Storm Minnows
  • Mosquito Fish (Potbelly Minnows)
  • And More...

It's safe to say that speckled trout have a long menu to choose from, and which one they choose will dictate where and how they feed, so let's jump into that.

Speckled Trout Location During Spring

This is where the rubber meets the road!

Everything we've covered up until this point is key for two reasons:

  • eliminating unproductive water
  • zeroing in on the most productive water

So, if you skipped over all that stuff, do yourself a huge favor, scroll up and catch up on it.

Where They're Starting...

Because we know what trout were doing during the winter time, we know they are starting spring deep inside the marsh.

Where They're Going...

And because we know where they need to go to spawn, we have a good idea as to where they will end up.

What Happens Along The Way...

Speckled trout behavior before, during and after a cold front is pretty straightforward, but how they behave when feeding on different bait is different, so let's knock that out.

Speckled Trout Feeding on Shrimp

Where brown shrimp flow is fairly predictable because they cannot swim well under their own power.

Instead, they use the tide to exit the marsh, and where we find the tide flowing, we will find shrimp!

shrimp wing net

Shrimp flow so predictably that fishermen put stationary wing nets out to catch them.

What's cool is that this flowing water can be seen from a distance because it creates visible "lines" at the surface.

We call these "tidelines".

"Highways" in the Marsh

Bodies of water can be categorized by how much water moves through them.

A small bayou doesn't move a lot of water, so it is more like a "sidewalk" for fish to use.

However, a large pass is more like a six-lane highway, because it moves a lot of water (and typically has large tidelines when it does).

If this concept is new to you, then you really ought to read this blog post about highways in the marsh.

Anyway, locating these tidelines in the marsh is key to locating where brown shrimp will congregate and be fed upon by speckled trout.

It's pretty much the same thing that happens with the white shrimp migration during fall.

white shrimp feed through passes 600
Diving Birds

While I strongly recommend using tidelines to find feeding specks, diving birds are certainly the low hanging fruit.

Just understand that "sitting" birds are also good to fish, but be wary of liar birds during the speckled trout spring pattern.

sitting seagulls

Also, if all you catch under diving birds are throwbacks or sail cats, then that's all there probably is.

Click here for more tips on fishing diving birds.

Speckled Trout Feeding on Finfish

Pogies and mullet tend to get fed on when they get near the shoreline, or at least shallow water.

When they do, it's pretty obvious.

What's less obvious are the demersal finfish that are well under the water, but how do we find them?

demersal finfish location during speckled trout spring pattern

Rocks like these make excellent homes for demersal finfish.

A lot easier than finding mullet or pogies, that's for sure!

This is because they're attracted to places that offer them food to eat and cover from predators. Examples include:

  • Riprap
  • Rock Jetties
  • Oyster Beds
  • Bridge Pilings
  • Natural Gas Platforms

Want to learn more? There's more detail in this blog post about demersal finfish and the winter pattern.

There is something very important you should know about demersal finfish!

They will influence not only where speckled trout are feeding, but also how they are feeding.


In May 2018 there was a good run of speckled trout on the MRGO Long Rocks near Hopedale, Louisiana.

There were a lot of boats, and the majority of them were throwing live shrimp under a cork and not catching a thing.

How could this be? 

It's all explained in this blog post about fishing the MRGO Long Rocks during the speckled trout spring pattern.

(video and tackle used included)


The speckled trout spring pattern is dictated by their need to spawn, prevailing conditions and primary forage.

Master the ability to recognize these and you'll be on your way to locate and catch speckled trout all on your own!

But there's more to it..

There are many more things needed to make a successful (and safe) speckled trout trip happen:

  • Avoid shallow water
  • Find spots before the trip
  • Which tackle works best
  • Proper boat positioning
  • and more...

Have you mastered these skills? 

Do you even want to?

These and more are available inside Inshore Fishing 101 and Inshore Fishing 201.

Or, you can take a "super shortcut" and see exactly where I'm fishing (and how) when you join LAFB Elite.

About the Author Devin Denman

Devin is the founder of Louisiana Fishing Blog and enjoys exploring new fishing spots on Louisiana's coast. He prefers using artificial lures and casting tackle, but won't hesitate to break out a popping cork when the time is right.

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  • Wayne Desselle says:

    In February & March the post larval brown shrimp (200 count or smaller) come from offshore into the marshes where they grow. the growth rate is very fast (They double in size every 10 days or so if the water is warm enough). The brown shrimp leave the marshes and go offshore during late June or July where they spawn.

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