This knife has a stainless steel blade that's great for most sizes of fish. (geekwrapped.com)
Alternatively, «slot limits» could set minimum and maximum sizes of fish that can be harvested. (newscientist.com)
Now, with these data serving as the basis for their models, Allgeier and collaborators can estimate the total amount of nutrient output from fish by knowing the species and body size of fish in a coral reef community. (sciencedaily.com)