I have no idea what it is, but I have seen what I assume is the exact same thing, One pupil completely neon green. I have a great picture of it, I am just trying to locate it, its either on an old phone, or sd card. I have always wonder what could have caused it, and if its harmful.
Up at a popular fly in lodge, I usually have some success and a lot of fun trolling buzz-baits with just a few yards of line out, right beside the boat. I don't waste a lot of time on this, and haven't caught anything huge, but watching them strike a buzz-bait right beside you is an amazing sight! BTW...Leaving for our 2012 trip next weds!
south bend non removable are a good alternative as well. They are already fairly dark, and if you dont crimp them on too tight, they slide around fine on your shot/main lines.
forgot to add, they are available at walmart
Ive never owned a scale, and dont carry a tape, the only measurement I got was the pike @ 44"
These are all from 2009-2011. Im sure i have topped the lake o, and huron fish, but no pics=no fish.
Lake O
buck:
Hen:
G.B
Buck:
Hen:
Huron:
Pike
Bass
Walleye
Brown