Primary Headwater Habitat Stream Organisms

Some aquatic organisms found in studies of Ohio primary headwater streams

See "Links to related sites" below to find information about these organisms.

Some organisms rely on Ohio primary headwater habitat streams for a place to live. These include certain fish, such as Redside Dace and Mottled Sculpins, and certain salamanders, such as Two-lined salamanders and Northern Red salamanders, that rely on the cool waters that typically are found in class III primary headwater habitat streams. There are also a number of insect larvae, such as certain species of stonefly and caddisfly, that depend on the cool waters of class III primary headwater habitat streams. In addition to species that need the cool waters of class III primary headwater habitat streams, there are a large number of species that can live in the warmer waters of class II primary headwater habitat streams.

Below is a list of some of the organisms that live in Ohio primary headwater habitat streams. These include species that rely on class III primary headwater habitat streams for habitat, and species that can live in a wider variety of places, including class II primary headwater habitat streams.




Bluntnose Minnow

Allegheny Mountain Dusky salamander

Alderfly larvae

Brook Stickleback

Cave salamander

Caddisfly larvae

Creek Chub

Four-toed salamander


Creek Chubsucker

Kentucky Spring salamander

Cranefly larvae

Fantail Darter

Long-tailed salamander


Fathead Minnow

Midland Mud salamander

Damselfly nymphs

Green Sunfish

Northern Dusky salamander

Dragonfly nymphs

Greenside Darter

Northern Red salamander

Fishfly larvae

Johnny Darter

Northern Spring salamander

Freshwater sponges

Largemouth Bass

Northern Two-lined salamander

Mayfly nymphs

Mottled Sculpin

Smallmouth salamander



Southern Two-lined salamander

Riffle beetles

Native Brook Trout

Streamside salamander


Orangethroat Darter

Tiger salamander


Rainbow Trout


Sow bugs

Rainbow Darter


Stonefly nymphs

Redside Dace


Water mites

Rosyside Dace


Water penny beetles

Silverjaw Minnow



Southern Redbelly Dace



Stoneroller Minnow



White Sucker



Links to related sites


Ohio Department of Natural Resources - fishes of Ohio's state scenic rivers:

James Ford Bell Museum of Natural History - fishes of Minnesota:

New York State Department of Environmental Conservation - freshwater fishes of New York:


Ohio Department of Natural Resources - Ohio's amphibians:

Disappearing Jewels: The Status of New World Amphibians. Executive Summary:

U.S.Geological Survey - checklist of amphibian species and identification guide:

University of Illinois at Urbana-Champaign - herpetofauna - a life's list:

World Conservation Union - declining amphibian populations task force:


U.S. EPA - invertebrates as indicators:

Kentucky Division of Water - an introduction to benthic macroinvertebrates:


The Ohio State University - virtual watershed tour: