Fish Records by Length

Fishing records by length
WD- resistant-strain rainbow trout

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Fish Records by Length

In this program, records are by length (inches), as opposed to our other program, records by weight, which does not allow for catch-and-release entries. Unlike the Records by Weight program, these fish must be released in order to qualify. This program requires anglers to follow specific steps for record submission and acceptance.

Old Length Records

Prior to January 2020, the fish that were considered for the Records by Length program came through our Master Angler program. The Master Angler program had minimal length verification requirements to verify the size of the fish before it was released. Because of this, the validity of some catches was brought into question.

To view state records that existed before January 2020, please see the Heritage Master Angler Length Awards. The Heritage Master Angler Length Awards are a culmination of the largest fish of each species that was submitted through our Master Angler program since its inception through 2019.

Apply for a Length Record

The angler will fill out and return the application form (PDF), provide a picture of the fish on a measuring device, and have a witness sign the application. This will be mailed to the Assistant Chief of Hatcheries in Denver.

NOTE: Northern pike and smallmouth bass caught in waters west of the Continental Divide will only be recognized for the State Record by Weight category. As a partner in the Upper Colorado River Endangered Fish Recovery Program and San Juan River Basin Recovery Implementation Program, CPW encourages anglers to catch and keep northern pike and smallmouth bass in most waters on the Western Slope of Colorado.

Applications can be sent to:

Record Fish Program
Colorado Parks and Wildlife
Attention: Assistant Chief of Hatcheries
6060 Broadway, Denver CO 80216
 

Measuring Fish for Record Application

How to measure a fish's length

To accurately measure a fish for a length record:

  • You MUST place the fish directly on the measuring device (ruler, tape measure, etc.). As pictured above, the measuring device shall be behind or under the fish and not following the curvature of the fish.
  • You MUST align the fish at a clearly marked area of the measuring device. In the image above, the 1-inch mark is used to clearly and accurately indicate the starting point for measurement.
  • You MUST place fish on its side with the jaw closed.
  • You MUST squeeze the tail fin together to obtain the maximum overall length.
  • You MUST measure a straight line from the tip of the snout to the extreme tip of the tail fin.

NOTE: When applying for a state record by length, the fish must be greater than the length of the current record fish, or if there is no current record, the fish must be greater than the qualifying length, both of which are listed in the table below.

Flathead Catfish

30.00

2021

None

No current record holder.

Freshwater Drum

20.00

2021

None

No current record holder.

Golden Trout

16.00

2021

None

No current record holder.

Grass Carp

37.00

2024

Allen Park Lake

Daniel Geiger

Grayling (Arctic)

16.75

2023

Bonham Reservoir

Kenzie Sanderson

Green Sunfish

10.25

2022

Private Farm Pond (Mesa County)

Andrew Potter

Greenback Cutthroat Trout

20.00

2021

None

No current record holder.

Hybrid Sunfish

10.88

2021

Juniata Reservoir

Tristan Francis

Kokanee Salmon

20.75

2023

South Platte River

Cody Hails

Lake Trout

36.00

2024

Lake Granby

John S. Ota

Largemouth Bass

22.50

2023

Longview Pond (Private)

Timothy Holt

Longnose Sucker

18.00

2021

None

No current record holder.