Fishionary

A blog about fish words!

By Abigail Lynch

A blog about fish words!

growth

Fry

Posted by abby on February 21, 2020

Coho Salmon fry (photo credit: City of Surrey).

Guest post: Gretchen Stokes, University of Florida

Fry refers to a life (growth) stage of fishes that are recently hatched.  This is generally after the yolk sac has been absorbed and almost or entirely disappeared.  At this point, the swim bladder is typically functional and fish can actively feed for themselves.  Depending on the species, this stage can last a few months or more until scales develop.  Fry can be thought of as the “infant” stage for fishes.  Because of their small size at this stage (often only a few centimeters), fry are vulnerable to predation in this stage and need shallow, protected habitat to feed and grow.

Posted in: F | Tagged: growth, juvenile, life history, reproduction, yolk sac

Fingerling

Posted by abby on December 13, 2019

Fingerling size fish (photo credit: Food and Agriculture Organization).

Guest post: Logan Neu, University of Minnesota Twin Cities

Fingerling is a broad term applied to a juvenile fish that is about the size of a finger.  The definition of what length classifies a fish as a fingerling varies between species, but the Food and Agriculture Organization (FAO) generally defines a fingerling as ranging in length from 10 to 15 centimeters.  The term fingerling is most often used in aquaculture and fish stocking programs because fish at this life stage are more physically developed and better equipped to survive the harsh outdoor environment than earlier life stages.  Most fish stocking programs stock fish at this life stage in order to increase the survival rate of the newly released fish.

Posted in: F | Tagged: aquaculture, growth, hatchery, juvenile, life history, stocking

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