HERE - Inland Fisheries Ireland

The Central and Regional Fisheries BoardsBrown trout ranged in length from 4.9cm to 23.8cm (Fig. 4.2). The age classes 0+, 1+, 2+ and 3+ werepresent, accounting for approximately 52%, 34%, 10% and 5% of the population respectively. Mean L1,L2 and L3 of brown trout were 7.1cm, 13.3cm and 17.3cm respectively (Appendix 1). Trout growth in theGlashaboy River was categorised as slow (Appendix 1) based on a classification of growth in rivers byKennedy and Fitzmaurice (1971).Eels, ranging in length from 11.4cm to 38.4cm, were present in the Glashaboy River site (Fig. 4.3).Salmon, ranging in length from 11.5cm to 15.4cm (Fig. 4.4) were recorded in two age classes, 1+ and 2+,accounting for 8% and 92% of the population respectively. Mean L1 and L2 of salmon were 6.0cm and9.5cm respectively (Appendix 2).Number of fish7060504030201000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24Length (cm)Fig. 4.2. Length frequency distribution for brown trout in the Glashaboy River, July 2008 (n = 303)Number of fish3.532.521.510.500 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38Length (cm)Fig. 4.3. Length frequency distribution for eels in the Glashaboy River, July 2008 (n = 16)10