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tasty, near the shore of Kamtchatka it is comparetively 

 a rare, but tasty fish. 



Salmon-trout (Salvelinus malma-mountain-trout) is one 

 of best tasting fish on the Commander Islands, thrives 

 in any basins and has several kinds of varieties. To attain 

 sexual maturity it floats into the sea-appearing in the 

 rivers at two periods, in spring and autumn. On the 

 photographs are shown adult specimens going into the 

 river. In the rivers the mountain-trout is subject to a 

 change of form, whereb}^ the head remains the same, but 

 only the colour of the skin changes and pectoral and 

 ventrals fins develope in width. During the whole of its 

 stay in the river until spring this trout feeds on various 

 shell-fish (with the exception of Mysidae) and its flesh 

 acquires a peculiar taste. Feeding on Hammarids and 

 ostrakods gives a less tender taste to the flesh. The pho- 

 tograph gives one an idea af the outward appearance of 

 the river-trout. 



Amongst the other specimens of the Salmonidae- 

 Mallotus villosus Cuv (Capelin), had an important value on 

 the life of the cod-fish. On the Commander Islands there 

 are not many of these or other members of this class; 

 Osmerus are rarely washed in by the sea together with 

 the herring which passes the Islands in shoals, but never 

 spawn here. 



Here just like in Europe great quantities of stickle- 

 backs are found in the sea, as well as in rivers. This 

 small fish does great harm to the roe and to the young 

 salmon, the Americans have correctly called it the salmon 

 killer. On the Commander Islands stickle-backs has no 

 economical value as food. On the eastern shore of 

 Kamtchatka, during the years of famine it is prepared 

 together with some species of Osmerus (Ouek in northern 

 part of Kamtchatka). 



The members of the Raja species afford only a scien- 

 tific interest as the specimens of the shark; the last 

 occasionally appear in shoals near the Islands. 



