UNIVERSITY PARK, Pa. — Penn State researchers, who are evaluating the colors, pattern variations and genetics of wild brook and brown trout across Pennsylvania, are asking anglers to help with their study.
They want anglers to submit photographs of wild brook and brown trout they catch and include a special gray card in the frame. To participate, anglers can request gray cards by going to this website, and the cards will be mailed to them for inclusion in trout photos.
Anglers simply take a picture of a trout with the gray card in view and submit it via Survey123. Instructions on how to download that app will be included when they receive the gray cards, explained researcher Sara Mueller, doctoral candidate in wildlife and fisheries science.