Sponsored By
An organization or individual has paid for the creation of this work but did not approve or review it.

ADVERTISEMENT

ADVERTISEMENT

Why determining the age of fish is so important for North Dakota biologists

In this segment, host Mike Anderson of the NDGF talks with Missouri River System fisheries biologist Russ Kinzler.

Aging Fish on Lake Sakakawea.jpg
The North Dakota Game and Fish studies about 1,500 walleye each year from Lake Sakakawea to determine their age.
Contributed / North Dakota Game and Fish Department
We are part of The Trust Project.

BISMARCK — The North Dakota Game and Fish Department determines the age of about 1,500 fish a year on Lake Sakakawea.

That information, derived from age rings in a fish's otoliths, a small inner-ear bone, provides biologists with an array of data. Biologists can determine if a stocking year was successful, how strong of a year's population of fish have become, determine mortality rates, chart fish growth and other information.

In this segment, host Mike Anderson of the NDGF talks with Missouri River System fisheries biologist Russ Kinzler.

Kinzler says the oldest fish ever recorded through sampling on Lake Sakakawea was 27 years old.

“Fish tend to live longer and colder bodies of water and Lake Sakakawea has lots of deep, cold water so our fish tend to grow a little bit slower than say a fish in a small lake out in the prairie," he says.

ADVERTISEMENT

MORE NEWS RELATING TO ND GAME & FISH:
Aquatic nuisance species violations were the top issues in the fishing realm, followed by anglers exceeding the limit for fish species.

What To Read Next
Known as “Aulneau Jack” to some, Wollack made a solo canoe trip around the Aulneau Peninsula on the Ontario side of Lake of the Woods when he was 75 years old.
Temperatures will rebound nicely for the Northern Plains and Upper Midwest for our first weekend in February
While larger communities may have several hunter education classes, many North Dakota towns may have only one course each year.
Shane Johnson of Minot caught 19-pound, 8-ounce burbot Jan. 3 from the Garrison Dam Tailrace.