Data from research bottom-trawl surveys of the Scotian Shelf and the Bay of Fundy in the 1970-79 period are analyzed to present total and preferred ranges and means of depth, temperature and salinity for 31 common fishes. Geographical variation in relation to preferences and to fish distributions is examined for selected groups of fishes. Niche diversity is exemplified in groups of related species.

An intensive bottom-trawl survey of the shallows around Sable Island on the Scotian Shelf revealed large concentrations of a-group and 1-group haddock, Melanogrammus aeglefinus. Spatial distributions were uneven and differed between the groups, with a-group fish showing a preference for shallower water. Segregation by size was also evident for a-group fish. It is suggested that the shallows around Sable Island are important nursery areas for young haddock and should be considered for protection. Regular surveys of the area might be useful for estimating recruitment to the Scotian Shelf haddock fishery.

for the general public within the Coeur d'Alene Reservation to facilitate a "holistic" watershed protection process; 4) Develop an interim fishery for tribal and non-tribal members of the reservation through construction, operation and maintenance of five trout ponds; 5) Design, construct, operate and maintain a trout production facility; and 6) Implement a five-year monitoring program to evaluate the effectiveness of the hatchery and habitat improvement projects. Since that time, much of the mitigation activities occurring within the Coeur d'Alene sub-basin have had a connection to the project entitled "Implement of Fisheries Enhancement Opportunities on the Coeur d'Alene Reservation", which is sponsored and implemented by the Coeur d'Alene Tribe Fisheries Program and is the subject of this report. These activities provide partial mitigation for the extirpation of anadromous fish resources from usual and accustomed harvest areas and Reservation lands.

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From the tagging of Atlantic herring in different seasons at 23 localities along the east and southeast coasts of Newfoundland during 1974-81, the tag recoveries indicated substantial intermingling of the local populations of the different bays. This intermingling is mainly due to northward feeding migrations in summer and southward migrations in autumn to over-wintering areas. Movement to spawning grounds occurs in the spring, at which time the populations of the various bays tend to be very discrete. However, the relationships of the populations outside the spawning season are dynamic, with the degree of intermixing being partially dependent on population size. It is concluded that the fisheries for herring along the east and southeast coasts of Newfoundland outside the spawning season could conveniently be managed as four stock complexes in the following areas: White Bay-Notre Dame Bay,