Brooks, and Ukak Rivers, We did not collect 

 them in Brooks Lake but found them in the 

 lower portion of Brooks River below the falls. 

 In the sunnmer, many suckers occupy lagoon 

 areas in lower Brooks River and in Coville 

 and Grosvenor Rivers, apparently to feed. 

 We presume that they spawn in early spring, 

 because ripe females were collected just off 

 the mouth of Brooks River in May and early 

 June, Postlarval fry were taken in the Coville 

 River Lagoon in July. 



Gadidae 



Burbot, Lota lota (Linnaeus).-- Adult burbot 



were collected from Iliuk Arm, South Bay, 

 North Arm, and Bay of Islands of Naknek 

 Lake. One larval fish believed to be a burbot 

 was taken in a plankton tow in Coville Lake, 

 although no adults were taken in Coville or 

 Grosvenor Lakes, No burbot was collected in 

 Brooks Lake. Although no detailed data or 

 specimens are available, there is a report-"-' 

 of dead burbot on the upstream face of Brooks 

 weir in the late 1940's. By far the most ex- 

 tensive fish collecting in any area of Katmai 

 National Monument during the past 10 years 

 has been in Brooks Lake, and we doubt that 

 burbot now live in this lake. 



Gasterosteidae 



Threespine stickleback, Gasterosteus acu- 



leatus L i nna e u s .-- Threespine sticklebacks 

 were collected In the Naknek and Shelikof 

 Strait systems. Within the Naknek system they 

 were collected from Coville, Grosvenor, and 

 Brooks Lakes; all basins of Naknek Lake; 

 Coville, Grosvenor, and Brooks Rivers; Head- 

 water, Hidden, West, Margot, and unnamed 

 creeks draining into North Arm; and Gros- 

 venor and lower Naknek Lakes. Large num- 

 bers of threespine sticklebacks move from 

 Grosvenor Lake and South Bay into lagoon 

 areas in Coville and Brooks Rivers in early 

 summer to spawn. We saw thousands of fry in 

 these lagoons in late summer. The greatest 

 concentrations of threespine sticklebacks inthe 

 Naknek system apparently are in the west end 

 of Naknek Lake and in Northwest Arm (see 

 footnote 8). 



In Shelikof Strait drainages, we collected 

 threespine sticklebacks in Katmai River, lower 

 Kaflia Bay Lake, and Big River. Adults and 

 fry were collected in July or August; ap- 

 parently all of the populations were ana- 

 dromous because the extent of lateral plate 

 development on the adults suggested that they 

 were from estuarine or marine environments 

 (see Clemens and Wilby, 1961, p. 353). The 



fish were collected in fresh water, except for 

 lower Kaflia Bay Lake, which is slightly 

 brackish. The fresh-water areas were only 

 a short and readily accessible distance fron-i 

 salt water. 



Lateral plates on adult threespine stickle- 

 backs from Shelikof Strait drainages were 

 strongly developed, whereas those on Naknek 

 system specimens were weakly developed or 

 absent. 



Ninespine stickleback, Pungitius pungitius 

 (Linnaeus ).- -Nines pine sticklebacks were 

 collected in the Naknek, King Salmon, and 

 Shelikof Strait systems. They live through- 

 out the Naknek system in the same lake and 

 stream areas as threespine sticklebacks, ex- 

 cept for Hardscrabble Creek and Savonoski 

 River, where only ninespine sticklebacks were 

 collected. In the large lakes, the ninespine 

 stickleback seems to be nnore of a benthic 

 fish than its relative, although both species 

 occur in almost all lake habitats. One notable 

 difference in the distribution of the two spe- 

 cies of sticklebacks in the Naknek portion of 

 the monument is that only ninespine stickle- 

 backs live in many of the shallow bog lakes, 

 tundra ponds, and beaver ponds. Examples of 

 this distribution include the lakes and beaver 

 ponds above West Creek, beaver ponds at the 

 head of Hidden Creek, and Nystrom Lake --a 

 small shallow lake near the mouth of Brooks 

 River. Bond and Becker ^^ also noted this pe- 

 culiarity in the Iliamna Lake area. Robert and 

 Alice Dewey, resident biologists at the BCF 

 Brooks Lake Laboratory, found that ninespine 

 sticklebacks were more tolerant to warmer 

 aquariunn water than threespine sticklebacks. 

 Perhaps high summer temperatures in shallow 

 ponds prevent establishment of stable popu- 

 lations of threespine sticklebacks. In the King 

 Salmon River system, ninespine sticklebacks 

 were collected in a slough of Takayoto Creek 

 and in lower Cozy Lake, where they were very 

 abundant. Only two specimens were collected 

 fronn the Shelikof Strait area of the monument; 

 these were both taken in Big River about 

 4,8 knn, above salt water, 



Cottidae 



Coastrange sculpin, Cottus aleuticus Gil- 

 bert. --Coastrange sculpins were collected in 

 the Naknek, King Salmon, and Shelikof Strait 

 systems. In the Naknek system they were col- 

 lected in Coville and Brooks Lakes; South Bay 

 of Naknek Lake; Grosvenor, Brooks, and Ukak 

 Rivers; Hidden, One Shot, and West Creeks; 

 and unnamed creeks in Grosvenor and Naknek 

 Lakes. In the King Salmon systenn they were 



■""'George J. Etcher, Portland General Electric Com- 

 pany, in conversation with W. L. Hartman at Brooks Lake, 

 June 1965. 



■'■^Bond, C. E., and C. D. Becker. 1963. Key to the 

 fishes of the Kvlchak River system. Univ. Wash., Seattle, 

 Fish. Res. Inst., Circ. 189, 9 pp. 



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