That's a Whisker-Faced Black Brookie! Only place I ever heard of WFBB's caught on a fly before, was on the Upper West Branch of the Little Stielamohapnacong creek. But nothing near that size!
It's scientific name is Whiskered Bottomius Feedorious.
And a very nice specimen, I might add.
Isaiah 41:10
Nice fish. Never saw one that size.
Rick.
It does have an adipose fin.
Bob