Skip to Main Content Skip to Main Navigation
Join the Griffin's Guide HUNTING newsletter

Get weekly news, tips and photos from the world of hunting.
[contact-form-7 id="35884" title="GG Email"]
No Thanks!

How to Measure a Fish

Brought to you by:

Size limits are generally based on the total length of a fish. The total length of a fish is the maximum length with the mouth closed and the tail pinched together measured from the snout to the tip of the tail. The best way to obtain this straight line measurement is to push the fish’s snout against a vertical surface with the mouth closed and with the fish lying along a tape measure and then pinch the tail fin closed to determine the total length.

Fork length refers to the measured length from the snout of a fish to the end of the middle caudal fin rays.This is the measurement for determining the legal size of a shark.

The girth of a fish is best measured with a fabric ruler. Measuring the girth is helpful in trying to determine if you have a possible record fish, which is determined by total weight. By using the total length and girth of a fish in inches you can get a rough estimate of the weight in pounds with this formula —

(Girth in inches x Girth in inches) x Length in inches) / 800 =
Approximate weight in pounds

131641.png
131643.png

Regulations in red are new this year.

Purple text indicates an important note.

Return to the eregulations.com home page
Brought to you by:
Conservation Partner Advertisements: The Maryland Department of Natural Resources allows appropriate advertising in its annual regulation guides in print and online, in order to defray or eliminate expenses to the state, and support enhanced communications with Maryland Department of Natural Resources Constituents. Through a unique partnership with J.F.Griffin Publishing, LLC & eRegulations.com, ‘Conservation Partners’ have been established that pay for advertising in support of the regulations both in print and online. The Maryland Department of Natural Resources neither endorses products or services listed or claims made; nor accepts any liability arising from the use of products or services listed. Advertisers interested in the Conservation Partners program should contact J.F.Griffin/eRegulations.com directly at 413-884-1001,
JF Griffin Media
J.F. Griffin Media reaches 9,000,000 sportsmen every year through our print and digital publications. We produce 30 hunting and fishing regulation guides for 15 state agencies. For advertising information, please visit: www.jfgriffin.com