Abstract: A fish measuring device is described which has a fish support surface with a length, width and first and second ends opposite one another. A stop at the first end prevents movement of a fish lengthwise beyond the first end and at least two fish restraining members at least partially along the length of the fish support surface partially enclose or envelope an interior space with the fish support surface. A passage exists between the two fish restraining members to permit a fishing line and/or thumb and forefinger holding a fish to be brought therethrough to the stop. A live fish may be brought into the device while still hooked via the line or after being unhooked. While the fish is restrained in its movement, its length may be compared against the end of the support surface or a scale therein to determine its length.