European and Atlantic sturgeon, once present in Irish waters, are now critically endangered due to a combination of factors including the alteration of rivers through dams, weirs, and other barriers, pollution, and bycatch in fisheries. These fish species, which spawn in freshwater, are believed to have historically used Irish rivers for breeding, but these environmental changes have led to their extinction in Irish rivers and seas. The Irish Wildlife Trust and Blue Marine Foundation are advocating for the Irish government to actively participate in initiatives aimed at restoring sturgeon populations across Europe. The sturgeon is one of over a hundred species known to have gone extinct in Ireland since the arrival of humans. Reintroducing species is an essential tool for restoring biodiversity and ecosystems, which is a critical aspect of addressing the biodiversity and climate crises. Ireland has already experienced success with several reintroduction programs, but a more coordinated approach is necessary, with increased involvement from NGOs and community groups. The study identifies the sturgeon as a high-priority candidate for reintroduction and urges the government to take swift action to restore this iconic species to Irish waters.