You didn't know there were reseachers on the board? You should check out the profiles more often. It's astounding to see the wide range of folks on the forums, although admittedly it seems there are few scientists overall.
So the next logical question is this, is there a difference b/w salt water and freshwater species (difference in water density) such that anyone at home running a HT with either setup may be able to get away with having one or the other as a preference in order to save the 'hearing' of the fish?
For those still interested in what the heck an 'otolith' is (the fish ear bone in a sense, no pun intended), here's a micro picture from my personal archives a lovely
Salvelinus namaycush, the great lake trout.
Incidentally, if you count the rings you can estimate the age of the fish just like a tree. For anyone considering tossing some lake trout into their home aquariums, we've clocked one of our samples at 55 years of age!!
I hope the HT components are well chosen b/c you would be in it for the long haul, unless of course the fish hit the dinner plate before it hit old age.
