Vendace is the rarest freshwater fish in Britain, found only in Derwentwater in England's Lake District. A 2008 survey found that a Bassenthwaite Lake population was now extinct. Scotland once had two vendace populations – in Mill Loch and Castle Loch – but both are now extinct. To safeguard the species, fish from Bassenthwaite and Derwentwater were translocated to two bodies of water in the Scottish Borders in the mid-1990s. Vendace were introduced from Bassenthwaite to Loch Skeen and from Derwentwater to Daer Reservoir. Both introductions were successful and this species has become established in both locations. Another translocation of vendace from Bassenthwaite to Loch Earn (Perthshire) was also carried out in the 1990s. A population has become established there, but is present in low numbers.