Halibut Treaty Halibut Treaty The Halibut Treaty was a 1923 Canadian–American agreement concerning fishing rights in the northern Pacific Ocean. The treaty established the International Pacific Halibut Commission (IPHC) as a mechanism for the joint management of the Pacific halibut (Hippoglossus stenolepis) which, at that time, was in severe decline. The commission originally had four members but now has six, which are selected from industry and related government agencies. Half the members are Canadian and half are from the United States. The treaty also had a provision for a closed season, so halibut could not be fished during the more dangerous winter
Flat pebblesnail Flat pebblesnail The flat pebblesnail ("Lepyrium showalteri") is a species of freshwater snail, an aquatic gastropod mollusk in the family Lithoglyphidae. This species is endemic to the United States. This snail has been listed as endangered on the United States Fish and Wildlife Service list of endangered species since October 28, 1998. "Lepyrium showalteri" is the only species in the genus Lepyrium. "Lepyrium showalteri" is the type species of the genus "Lepyrium". Lepyriidae is a synonym of Lithoglyphinae. The flat pebblesnail is a small snail in the family Lithoglyphidae; however, the species has a large and distinctive-looking shell. This snail's