April 1 - October 31, 2023

The Great Chesapeake Invasives Count

Chesapeake Watershed

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Help collect important data while competing for great prizes!

Fishery managers need help understanding which invasive species are being caught and where to support the science based management of our natural resources.

Who Can Participate?

Anyone can enter. CCA Members are eligible for additional prizes.*

How it Works

Go fishing and report your data using the iAngler Tournament smartphone app.

Zach Ditmars snakehead catch
photo: Zach Ditmars

* CCA Members check your status and make sure your membership is current. Not a member yet? Become a CCA Member today.

3 Steps to Participate

Maryland DNR, USFWS, and other management agencies will use the data of what you're seeing on the water.

Register Today

Complete registration. You'll receive a confirmation email with detailed next steps, including your coupon code and the iAngler tournament link.

Log Your Catch

Create an iAngler account and download the iAngler mobile app to start fishing & log your catch! (location and one or more of the following data points: total length, weight and stomach contents)

Follow us on Facebook

Follow us on Facebook for live prize drawings at the end of each month. You have multiple chances to enter.

Need Help?

If you need assistance with logging into your existing account or have any other registration issues, please contact David Sikorski via email or by texting or calling (443)621-9186

What Invasive Species Should You Target?

(Click to expand)


Introduced into the Chesapeake in the early 2000s, Northern Snakehead (Channa argus) like shallow, warm water with vegetation and submerged trees for cover. They boast a mottled pattern that looks similar to a python, and have a round head and large, prominent teeth. Much has been made of the fish’s introduction and status as an invasive species. Many scientists agree that more research will be necessary to determine any negative environmental impacts of the snakehead species introduced into the United States. Regardless, these transplants from Asia have spread throughout the Chesapeake Bay watershed with their populations continuing to increase. They are big, aggressive, strong, and delicious, making them a prime species for sport fishing.

Blue Catfish
source: MD DNR

Blue Catfish are long and often slender with a deeply forked tail. A distinguishing feature of the blue catfish is that the anal fin margin, or edge, is straight as if it has been clipped with scissors. All other catfish species have rounded anal fins.

Blue catfish are typically a bluish, gray color on top with a silvery or white underside. They are the largest of the catfish family in North America and can attain weights in excess of 100 pounds. The Maryland state record blue catfish is 84 pounds.

As an introduced species, blue catfish are now commonly found in the tidal Potomac River and some of the other tributaries of the Chesapeake Bay. Studies are currently underway to determine their impact on other aquatic species.

Flathead Catfish

Flathead differ greatly in appearance from most other catfish species. Flatheads have a squarish tail, sometimes slightly notched. Their backs and sides are often an olive or light brown color with darker mottles or specks. Their bellies are often white or pale in color. Their heads are compressed, or flattened, and they have a protruding lower jaw. Flathead catfish can reach sizes in excess of 100 pounds but much smaller specimens have been encountered in the Chesapeake Bay region.

Flathead are an introduced species and are currently found in only a few places in the Chesapeake Bay; the Potomac River, Upper Bay, Elk and Sassafras Rivers.

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