Organizmy wodne

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A red-eared slider turtle basks on a log in the water.

The Invasive Red-eared Slider

November 3, 2025 by Laura Kammin, Scott Ballard

Aquatic Organisms

A group of children at two long tables paint with watercolors. Some children behind the painters watch the process.

A Celebration of Water: NGRREC’s 23rd annual Water Festival inspires the next generation of river stewards

November 3, 2025 by Jessica Mohlman

Aquatic Organisms | Education

A beautiful bright partly cloudy sky is reflected in a river as a canoe with many passengers paddles by. In the background is a tree-filled shoreline.

Currents of Curiosity: Waterschool summer programs build knowledge, confidence and stewardship in the Confluence District

November 3, 2025 by Jolena Pang

Aquatic Organisms | Education

On an early spring day, a group of people stand in front of a pond.

Responding to an Insidious Invader: Tackling a hydrilla outbreak

November 3, 2025 by Claire Snyder

Aquatic Organisms | Invasive Species | Rivers and Lakes

A long brown speckled fish hides under some fallen tree branches.

The Bowfin: Illinois’ Living Fossil

November 3, 2025 by Gretchen Steele

Aquatic Organisms | Fish | Fishing | Regulations

A man holds up a small black and tan mottled fish. In the background is a wetland with trees against a hazy blue sky. Overlaying the image in the upper right corner is a gray map of the state of Illinois with the counties outlined in black. Three white stars are located at the very bottom of the state.

Return of the Giants: The reintroduction of alligator gar to the Cache River

November 3, 2025 by Mark Denzer, Rob Hilsabeck

Aquatic Organisms | Fish | Fishing | Places to Visit | Regulations | Rivers and Lakes

A man wearing light blue gloves places a black and green medium sized fish in a cooler with water.

The Sport Fish Restoration Act Has Been Supporting Fisheries Management for 75 Years: Part 2

November 3, 2025 by Vic Santucci

Aquatic Organisms | Fish | Fishing | Regulations

A young woman holds up with both hands a large gray, tan catfish while standing on a boat near the shoreline of a lake. In the background is a marina filled with boats.

The Sport Fish Restoration Act Has Been Supporting Fisheries Management for 75 Years: Part 1

November 3, 2025 by Vic Santucci

Aquatic Organisms | Fish | Fishing | Regulations | Research

A researcher holds up a large fish with a long nose. She holds the fish with both hands while standing up in a boat on a large river. In the background a road crosses the river on a green bridge. A partly cloudy sky is overhead.

Why the Long Face: What is up with the big nose on paddlefish?

November 3, 2025 by Shasta Kamara, Cory Suski

Aquatic Organisms | Fish | Regulations | Rivers and Lakes

An underwater view of large walls of invasive plants overtaking native vegetation restricting open water space for aquatic organisms to swim.

Be a Hero—Transport Zero

August 1, 2025 by Kevin Irons, Brian Schoenung

Aquatic Organisms | Habitat Management or Enhancement

Two people stand in a boat offshore from Chicago in Lake Michigan. The individuals hold up small net traps to catch crayfish. The Chicago skyline is on the horizon line in the far distance. A bright blue sky is overhead.

Appreciating Crayfish in Illinois

August 1, 2025 by Reuben Keller

Aquatic Organisms | Invasive Species | Research

A crayfish standing in a grassy area with its pinchers up ready to defend itself.

Mudbugs Matter: Our freshwater heroes

August 1, 2025 by Dusty Swedberg

Aquatic Organisms | Crayfish | Pond | Rivers and Lakes

A researcher sits in a boat. She holds up a small, long fish in a small net. On her lap is a log book for recording data. In the background is a green grassy shoreline.

Jawless Fish With Suction Cups, Meet the Lamprey

August 1, 2025 by Rebekah Anderson

Aquatic Organisms | Endangered and Threatened Species | Fish | Rivers and Lakes

Many white, gray fish leap out of a fresh water river. Three people stand on a metal boat. One man and one woman use nets on long metal rods to net the fish. In the background is a shoreline filled with green vegetation and trees.

Monitoring to Manage: The Multi-Agency Approach to Invasive Carp in Illinois

August 1, 2025 by Brandon Harris, Michael Spear, James T. Lamer, Andrya L. Whitten Harris

Aquatic Organisms

A group of people stand together on a wooden dock over the shoreline of a freshwater lake. On either side of the dock is a metal boat filled with wooden boxes. In the background is a woodland with a road winding through down to the dock.

Building Better Catfish Habitat One Nest Box at a Time

August 1, 2025 by Danielle Shubat, Eden Effert-Fanta

Aquatic Organisms | Fish | Habitat Management or Enhancement | Pond | Research | Rivers and Lakes

A gray fish jumps up a small waterfall. In the background is a stream bank.

The Great Lakes Fishery Commission and the State of Illinois: Working together to better the Lake Michigan fishery

May 1, 2025 by Christina Contreras Stone, Lauren Holbrook

Aquatic Organisms | Fish | Fishing | Regulations | Rivers and Lakes

A green, brown and white frog sitting on the ground. In the background is green vegetation.

Listening to the Wetlands: How the STL FrogWatch Chapter is giving frogs—and wetlands—a voice

May 1, 2025 by Jessica Mohlman

Aquatic Organisms | Frogs and Toads | Volunteers | Wetland

A bright blue partly cloudy sky overhead is reflected in the large Mississippi river below. Small islands with trees and vegetation are in the foreground. In the background, limestone bluffs are framed by green vegetation.

Fisheries Management in the Mississippi River Basin

May 1, 2025 by Brian Schoenung

Aquatic Organisms | Fish | Fishing | Regulations | Rivers and Lakes

A group of people sitting around tables in a semi circle shaped conference room with large windows on one side. People are playing board games on the tables.

FinSpan & Freshwaters: A Game-changer for river conservation

May 1, 2025 by Jessica Mohlman

Aquatic Organisms | Rivers and Lakes | Water

Five large silver salmon laying on a concrete surface.

The Fascinating Journey of Coho Salmon in the Great Lakes

May 1, 2025 by Kayleigh Smith

Aquatic Organisms | Fish | Fishing