DEPARTMENTODE RECURSOSNATURALES DE ILLINOIS

J.B. Pritzker,
Gobernador|illinois.gov

Organismos Acuáticos

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A close-up on a counter-top of an orange prescription bottle on its side with a few white capsules fallen out onto the counter outside of the bottle. In the background are more medicines and pill bottles.

The Evolution of the International Prescription Pill and Drug Disposal

May 1, 2026 by Addison Harms, Lyla Donovan

Aquatic Organisms | Wildlife Health

A large dark green and white fish is held by both hands of a biologist. One hand is on the tail of the fish, and the other is supporting the head of the fish. The fish is supported by a net.

Largemouth Bass Production at Jake Wolf Memorial Fish Hatchery

May 1, 2026 by Kayleigh Smith

Aquatic Organisms | Fish | Fishing

Two gentlemen sit at a long blue table in front of a row of windows. The men hold up a folder with two documents on display.

Creating the First 100% Fisheries in the World

May 1, 2026 by David Naftzger, John Schmidt

Aquatic Organisms | Fishing

Three young boys and men in the background watch as a woman teaches all how to clean a fish for the table. In the background is a sun dappled lawn with trees and a parking lot.

Gar in Illinois: The misunderstood native “dinosaur” fish

May 1, 2026 by Gretchen Steele

Aquatic Organisms | Fish | Fishing

A close-up of a dragonfly with a brownish red head and thorax and a bright red abdomen.

Watching Dragons and Damsels

May 1, 2026 by Sheryl DeVore

Aquatic Organisms | Invertebrates | Research

A man stands in a parking lot holding up with both hands a large fish.

Available Soon, the 2026 Fishing Regulations Guide

February 2, 2026 by Kathy Andrews Wright

Aquatic Organisms | Fishing | Regulations

A small tan fish with a black stripe running down its side swims on a black background.

A Little Learning About Some Little Fish

February 2, 2026 by Kayleigh Smith

Aquatic Organisms | Fish

A close-up of two blue-gray catfish resting on the bottom of a pebbly stream.

Blue Catfish in Illinois: History, ecology and a growing fishery

February 2, 2026 by Gretchen Steele

Aquatic Organisms | Fish | Fishing | Rivers and Lakes

A brown fish resting on the shallow edge of a rocky steam.

Tiny Threatened Fish Species Re-introduced for the First Time

February 2, 2026 by Hugh Gabriel

Aquatic Organisms | Endangered and Threatened Species | Fish | Fisheries Pick | Habitat Management or Enhancement | Rivers and Lakes

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 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.
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 | Fisheries Pick | 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

Explora nuestra familia de sitios web

A link the Wildlife Illinois web site with advertisements for its four sections: Help, Sightings, Wildlife Identification, and Prevent Problems.
A link the Hunt Illinois web site.
A link the CICADA web site.
A link the Living with White-tailed Deer web site with advertisements for its three sections: ecology, management, and history.