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Fish Stock Survey of Lough Sessiagh, July 2021

Brown trout is the dominant fish species in Lough Sessiagh. Brown trout spawning is limited to a single narrow inflowing stream on the south-west shore (Fig. 1.1). Arctic char, a rare freshwater fish species listed in the Irish Red Data book of threatened vertebrates as vulnerable, is also present. The water is alkaline and has excellent clarity.

The lake has been surveyed on four occasions since 2006 (2006, 2009, 2012, 2011 and 2015). Brown trout have dominated fish stocks on all recent survey occasions. Arctic char, three-spined stickleback and eel have also been recorded.

This report summarises the results of the 2021 fish stock survey carried out on the lake using Inland Fisheries Ireland’s fish in lakes monitoring protocol. The protocol is WFD compliant and also provides insight into fish stock status in the lake

Topics: Lake Surveys 2021 |