River Ecology
Pools, Part 1 (Real Media)
Pools, Part 2 (Real Media)
Pool habitat
Longear sunfish
(image © Nature's Images, Inc.)
Mosquitofish
(image © Nature's Images, Inc.)
Riffle habitat
Dusky darter
(image © Nature's Images, Inc.)
Orangethroat darter
(image © Garold W. Sneegas)
Run habitat
Blacktail shiner
(image © Nature's Images, Inc.)
Central stoneroller
(image © Garold W. Sneegas)
Fish kill