What influences a Brown's Spots?

I caught a brownie today that had just a smattering of spots and none were red. My mind’s indelible trout, my biggest brown thus far, had innumerable black spots, crammed together so that many were not even round anymore, along with splashy red ones.

What factors figure into a brown’s pattern? Is one more influential than another?

Also, I know that they may change at breeding time, but isn’t that just in intensity of color? Just the males?

Good question - why not submit it to our Stream Doctor?


LadyFisher, Publisher of
FAOL

Ok. How do I do that?

You are indeed Grand, Poo-Bah.

Flyangler,

Well,… what did you find out?
Let the rest of us know.
I have often wondered the same thing.


MW

This is not what you meant – but red spots appearing on a brown trout’s adipose fin is a strong indication of wildness. Stocked browns do not have those spots unless they have been in the stream for some years.

It has something to do with the trout’s diet in the wild, or so I’m told by a very good authority.

Browns are the only trout where that happens.

Anticipation!!!


Mike

Ever consider genetic makeup?
Trout have genes, too.
Got any brothers and/or sisters?
You probably look somewhat alike ( but not exactly ( unless you’re identical twins.


Knowledge is power ? Nam et ipsa scientia potestas est.
? Francis Bacon (1561-1626)


The_Sib

A tease: nature and nurture play roles, but leave some grey areas. These can surely be filled with opinions, no?