This new Photarium product was designed in collaboration with lamprey biologists at the Yakama Nation Fisheries to provide the best tool possible for safely and efficiently measuring and observing lampreys in the field.
Featuring a reversible and removable insert, this versatile tool is designed to allow the user to easily switch between three different internal widths to effectively measure larval and juvenile anadromous lampreys as well as all life stages of resident lampreys (larva /juvenile /adult) and other fish species (up to 180 mm).
We are very excited to release this brand new species-specific design for the first time ever for lamprey biologists, educators, and observes alike. A special thanks to Ralph Lampman and the lamprey staff at the Yakama Nation Fisheries for making this exciting new tool possible!
Easily insert even the smallest larvae or juveniles into this narrow Photarium with minimal handling.
REVERSIBLE & REMOVABLE INSERT
Flip or remove the clear insert to choose between three unique internal widths (ID) depending on the size of the fish:
3/16”— The smallest width is best suited for smaller larvae (< 100 mm)
5/16”— The medium width works perfectly for even the largest larvae and juveniles (& resident adult lampreys)
5/8″— Remove the insert completely to measure a variety of other fish species
STORAGE AND TRAVEL
The hinged fold-up cover plate protects the transparent face during storage or travel.
Comes with custom waterproof ruler decal for measuring lamprey and other fish up to 180 mm in length.
4” H x 7.5” W x 5/8” x 1 3/8” OD