Wow ! Where to start . Maybe in parts with a few facts. Nice post Sprk . Good questions!!

The data on age is on BG not CNBG. It comes from Carlanders text and many other studies mostly on public waters. It is basic biology and nothing to do with supp feeding ( feeders/pellets etc). The principle on age is not restricted to fish. Science has shown that as a general matter muscle tissue has by design a limited number of times to stretch and contract . That is how muscles work by chemical contracton and expansion. The heart is a muscle and when it stops it's over - there are a limited number of heart beats. Same for other organs. In cold blooded animals heart rate and muscle metabolasm slows when cold. In short over a population ( not one fish) cold water northern BG hearts beat less over a year due to cold winter temps than warm water southern BG thus they live longer. It's that simple and is born out in the extensive data reported in Carlanders ( thousands of reports) and a multiplicity of other scientific reports .

There is some reported info on problems with fed fish vs non-fed fish but not with age (fatty livers for example).

More to follow .

Handbook of Freshwater Fishery Biology, Volume 1

Front Cover
Kenneth D. Carlander
Iowa State University Press, 1969 - Nature - 752 pages
0 Reviews

These volumes have, for over 30 years, been the most readily available source listing the scattered articles, theses, bulletins, and research on freshwater fish in the United States and Canada. The Handbook of Freshwater Fishery Biology summarizes the available data on age, growth, length weight, fecundity, reproductive behavior feeding habits, and necessary environment for each freshwater species. The comparison of species is presented in a manner easily used by fishery mangers and biologists.


Last edited by ewest; 02/06/16 10:56 AM.