A fish passage study on American shad.

A fish passage study on American shad.

Detailed Description

While these gates might look similar to the entry way of a medieval castle, they are actually part of a scientific experiment that will help scientists design more effective fish passage structures for American Shad. Photo by Kevin Mulligan, USGS.

Details

Image Dimensions: 3024 x 3316

Date Taken:

Location Taken: US