Sandimirov S.S. Catalogue of lakes in the Russian, Finnish and Norwegian Border Area. Finland, Jyvaskyla: Kopijyva Oy, 2008.

Fig. 26. Distribution offish spe­ cies in Lake Shuonijaur. Fig. 27. Size and weight distribu­ tion ofarctic char in Lake Shuonijaur. littoral zones of the lake. The mean size and weight of arctic char are 25.5 cm and 222 g.The maximum size can reach 38.5 cm and weight 875 g.The bulk of the population consists of fish with a weight ofbetween 100-200 g and length 20-26 cm. Individuals with a weight of bubot 18 over 500 g and longer than 30 cm occur occasionally (Fig. 27). The age distribu- char34.5 tion is predominately 4- to 5-year-old fish. Their proportion in the catches is 84 % (Fig. 28). Female specimens pre­ dominate over males (1.4:1). trout 49.1 perch 14.5 -100 100 300 500 700 900 0 200 400 600 800 1000 Weight, g > 3 16 20 24 28 32 36 40 Length, cm > 3 о 74% 63% 53% 42% 32% 21% 11% 0% 1+ 2+ 3+ 4+ 5+ Age, yrs > 3 Fig. 28. Age distribution ofarctic char in Lake Shuonijaur. The mean weight of trout in this lake is 190 g and length 24.4 cm. The size of the fish varies between 47-384 g and 16.5-31.0 cm, respectively. Fish with a weight of 150- 200 g and length 22-26 cm are the most abundant (Fig. 29). As is the case for arctic char, the bulk of the trout population (89%) consists of 4- to 5-year-old fish (Fig. 30). Female fish predominate over males (1.3:1). 64 Catalogue o f Lakes in the Russian, Finnish and Norwegian Border Area