Removing milt from a male. Biologists collect milt from anesthetized males into test tubes with a pipette. Each test tube is labeled with the pit tag information of that specific fish so it can later be matched with female eggs.

---

Size: 1732px × 1154px
Photo credit: © Natural History Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: animal, animals, archive, conservation, conserve, education, fauna, fish, flora, habitat, history, image, learning, management, natural, nature, preservation, preserve, record, reference, refuge, service, states, united, usfws, wildlife, world