HERE - Inland Fisheries Ireland

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The Central and Regional <strong>Fisheries</strong> BoardsSalmon ranged in length from 4.5cm to 14.2cm (Fig. 4.10). Two salmon age groups were recorded, 0+and 1+, representing approximately 72% and 28% of the population respectively. The mean L1 length ofsalmon was 5.7cm (Appendix 2). Eels ranging from 10.5cm to 41.4cm in length were recorded (Fig.4.11).Brown trout ranged in length from 5.6cm to 21.5cm (Fig. 4.12) and were present across three age classes,0+, 1+ and 2+, corresponding to 41%, 49% and 7% of the population respectively. Mean L1 and L2 ofbrown trout were 8.5cm and 16.2cm respectively (Appendix 1). Brown trout growth in the ShanowenRiver was categorised as fast (Appendix 1) based on a classification of growth in rivers by Kennedy andFitzmaurice (1971).300Number of fish2502001501005000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15Length (cm)Fig. 4.10. Length frequency distribution for salmon in the Shanowen River, July 2008 (n = 692)Number of fish8765432100 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42Length (cm)Fig. 4.11. Length frequency distribution for eels in the Shanowen River, July 2008 (n = 52)18
The Central and Regional <strong>Fisheries</strong> BoardsNumber of fish1210864200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21Length (cm)Fig. 4.12. Length frequency distribution for brown trout in the Shanowen River, July 2008 (n = 43)19
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HERE - Inland Fisheries Ireland

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