Jeff, the "fishermen" who are involved in these fish listings, aren't. They are "represented" by Zeke Grader and Glen Spain at the Pacific Coast Federation of Fishermens Associations. These are UN-accredited NGO lawyers working out of the San Francisco Presidio, not fishermen. The fly-fishing groups who were originally associated with the steelhead listing have since disavowed that participation.
If any fishermen groups have tied themselves directly to the UM NGO lawyers you mention, then they are even bigger fools. Little wonder the fly-fishermen disavowed it.