[DOC] [TLE] Estimating the age of fish - Wikipedia [PAR] Removing an otolith from a red snapper to determine its age. Knowledge of fish 
age characteristics is necessary for stock assessments, and to develop .... 
Counting the number of annuli (rings) on a scale provides the fish age and the ... 
For some examples and uses of scale aging you can go to "Fish scales tell a 
story. [DOC] [TLE] Aging of Fish by Their Scales - National Mississippi River Museum ... [PAR] Fish that have scales can be aged by looking at a scale or a scale imprint ... and 
produce what are called annular rings. These rings can be counted to age a fish. 
Objectives: ... used to determine the age of a fish much like growth rings formed 
in a tree. ... in on the worksheet, check the answer key to see how well you did. [DOC] [TLE] Can an otolith tell a fish's age? - UCSB Science Line - University of ... [PAR] Many parts of a fish can be used to tell its age, including the scales, bones, ... of 
age, since they tend to produce annual growth rings, called annuli, like a tree. Of 
these, the otolith (which is kind of like an ear bone) tends to be the easiest to 
interpret. ... However, it can be very difficult to count these rings accurately, 
especially... [DOC] [TLE] The Tale of a Scale [PAR] The rate at which the fish and their scales grow depends on a number of factors  
water temperature, available ... Like a tree, the fish grows faster during the 
summer when the ... o Ask the students, So you know when a fish's birthday is, 
but how do ... biologists can often tell the age of a fish by counting the rings on a 
scale. [DOC] [TLE] Age and Growth of Fish, Fish Ear Bones, Otoliths, How to Tell How Old [PAR] Fish are born, live and die like we do only you can't ask a fish its age. When a fish 
is ... These bones help the fish to keeping its balance in the water. When an ... 
These yearly growth rings are called annuli, which are similar to the rings found 
in tree stumps. You can count the rings in the otolith or stump and determine age. [DOC] [TLE] How to Determine the Age of Fish - Bedford Institute of Oceanography [PAR] Jun 16, 2015 ... Scales, bones, fin rays and otoliths have all been used to determine the age of 
fish, since these and other bony parts of fish often form yearly rings (annuli) like 
those of a tree. However, otoliths ... If you can see alternating light and dark 
zones, you're probably looking at annuli. They probably won't be as... [DOC] [TLE] Fish Age Determination - National Oceanic and Atmospheric ... [PAR] Patterns in the scales and otoliths reflect this change: summer zones are ... Fish 
age, in years, can therefore be determined by counting the number of ... Thus, the 
process of ageing fish is similar to finding the age of a tree by counting rings in 
the wood. ... In general, annuli from these various structures are visible under a... [DOC] [TLE] Fish scales tell a story [PAR] age 1 age 3 age 2 age 4. Fish scales tell a story DELAWARE DIVISION OF 
FISH & WILDLIFE, ... These can be determined by examining fish scales or other 
boney ... Scales show the history of the fish in a fashion similar to the rings of a 
tree. [DOC] [TLE] Determining the age of fish | NIWA [PAR] May 28, 2012 ... NIWA expends considerable effort on determining the age of commercial fish 
species. ... These estimates of year class strength can explain variations in total 
stock ... most notably in their otoliths (or 'ear stones'), but also in scales, ... are not 
as clear as tree rings; if they were, the studies of fish population... [DOC] [TLE] How can we know age of a fish? - Quora [PAR] There are several ways that fish scientists determine the age of a fish. Which 
method used

Question: Like a tree, you can tell the age of a fish by counting these on its scales
Answer: rings