from South Bay move into lower Brooks River 

 in the summer and feed, primarily on imma- 

 ture insects. These fish spawn in Brooks 

 River in November and December. The biology 

 of pygmy whitefish in the Naknek system is 

 reported by Heard and Hartman (1966). 



Round whitefish, Prosopiunn cylindraceum 

 (Pallas). --Round whitefish were collected in 

 the Naknek and King Salmon systems. They 

 occurred in Naknek, Coville, Grosvenor, and 

 Brooks Lakes; American and Headwater 

 Creeks; Hidden and West Creeks (tributaries 

 of Brooks Lake); and Coville, Grosvenor, and 

 Brooks Rivers. In the King Salmon River 

 drainage, they occurred in lower Cozy Lake. 



Round whitefish spawn in the autumn, ap- 

 parently in streanns similar to those inhabited 

 by mountain whitefish. P. williamsoni (Girard). 

 in Montana (Brown, 1952). About 200 adults in 

 breeding condition were seined from South 

 Bay of Naknek Lake off the mouth of Brooks 

 River on November 7, 1962. Both sexes were 

 tuberculate over much of the body and had 

 brightly colored orange ventral fins and a bold 

 longitudinal orange stripe along the body. 

 Tony Malone, a trapper from Naknek, Alaska, 

 reported that whitefish 12 to 16 inches (30 to 

 41 cm.) long were abundant in late autumn in 

 Headwater Creek above the monument boun- 

 dary. We believe these fish were round white- 

 fish because only that species and pygmy 

 whitefish occur in Brooks Lake or its tribu- 

 taries, and pygmy whitefish never grow longer 

 than about 20 cm. 



Rainbow trout, Salmo gairdnerii Richard- 

 son.- -Rainbow trout were collected only in the 

 Naknek system. We found them in Coville, 

 Grosvenor, and Brooks Lakes; South Bay and 

 North Arm of Naknek Lake; Coville, Gros- 

 venor, and Brooks Rivers; American, Head- 

 water, West, and Margot Creeks; and one 

 unnamed creek in South Bay at the base of 

 Dumpling Mountain. We have seen adult rain- 

 bow trout spawning in Brooks River in May 

 and have collected recently emerged fry in 

 quiet water along the river in August. Green- 

 bank (see footnote 4) presented age and growth 

 data for rainbow trout caught by sports fisher- 

 men in Brooks River, A nnoderately heavy 

 sport fishery for this fish also occurs in 

 Naknek River. We do not know if steelhead 

 occur in the Naknek system. 



Arctic char, Salvelinus alpinus (Linnaeus). -- 

 We collected Arctic char from Iliuk Arm, 

 South Bay, North Arm, and Northwest Arm of 

 Naknek Lake; Coville, Grosvenor, Brooks and 

 Idavain Lakes; and American and Margot 

 Creeks. There are limited sport fisheries for 

 Arctic char off the mouth of Margot Creek, in 

 some unnamed creeks along the north shoreline 

 of the North and Northwest Arms, and in Ida- 

 vain Lake. Spawning Arctic char from Idavain 



Lake are brilliantly colored and are referred 

 to by residents of the area as "goldentrout." 



Dolly Varden, Salvelinus malnna (Wal- 

 baum) .-- Two types of Dolly Varden occur 

 within the monument, one in the Naknek system 

 and one in Shelikof Strait drainages. Dolly 

 Varden in the Naknek system generally live in 

 streams and are small, usually less than 

 25 cm. long. McPhail (1961), who recently 

 evaluated the Dolly Varden-Arctic char conn- 

 plex in North America, recognized this snnall 

 stream -dwelling Dolly Varden as a northern 

 form, distinct from the more widely distributed 

 southern form. The Aleutian Range on the 

 Alaska Peninsula apparently represents the 

 dividing line for these forms. McPhail' s mate- 

 rial from Karluk and Fraser Lakes on Kodiak 

 Island was characteristic of the southernform, 

 and material fronn Brooks Lake was charac- 

 teristic of the northern form. 



In the Naknek system we collected Dolly 

 Varden from Grosvenor and Brooks Rivers, 

 and from Brooks Lake, Up-a-Tree, One Shot, 

 and Hidden Creeks. Greenbank (see footnote 4) 

 reported that specimens he collected from 

 Idavain Lake were Dolly Varden, but McPhail 

 (1960), who made gill raker counts of Green- 

 bank's specimens, suggested that thefishwere 

 Arctic char. 



The southern form of Dolly Varden, which 

 is widely distributed in streams and lakes 

 along the Shelikof Strait area of the monument, 

 is distinguished from the northern form prin- 

 cipally by fewer gill rakers and fewer verte- 

 brae; also, the southern form lives in lakes 

 and streams and may be anadromous or land- 

 locked (McPhail, 1961). We collected speci- 

 mens of the southern form in lower Kaflia 

 Bay Lake and in inlet and outlet streams of 

 this lake; in Dakavak Lake, Kuliak Bay Lake, 

 Devils Cove Lake, and the outlet stream of 

 this lake below the high waterfalls; in a small 

 pond on Martin Creek (tributary of Katmai 

 River); in Big River; and in Kaguyak Crater 

 Lake. An archaelogical survey team from the 

 University of Oregon collected this fish in 

 1963 from a small stream near the old village 

 of Kukak. Counts of gill rakers on the lower 

 limb of the first gill arch of Dolly Varden that 

 we collected from various areas along Sheli- 

 kof Strait agree with McPhail's (1961) counts 

 for Dolly Varden from Karluk and Fraser 

 Lakes on nearby Kodiak Island (table 1). 



Arctic char fronn Idavain Lake were air- 

 dropped into Kaguyak Crater Lake in 1956; 

 but none were observed in our collections. 

 We collected nine specimens of char in Kagu- 

 yak Crater Lake in August 1964; gill raker 

 counts of the specimens, however, indicate 

 they were Dolly Varden, distinct from Idavain 



E. Siler, a guide and bush pilot at King Salmon, de- 

 scribed this 1956 capture, transport, and air drop of 

 about 20 "golden trout" to us at Brooks Lake in 1964. 



10 



