Australian native fish require unimpeded access along waterways to survive and reproduce. The Lower Darling-Baaka and Menindee Lakes are highly productive systems that support significant populations of native fish in the Murray-Darling Basin. Currently in the Lower Darling-Baaka, fish can only migrate upstream as far as Lake Wetherell and Menindee Main Weir, with regulators and weirs blocking fish passage from the southern to northern Basin and contributing to significant increases in fish biomass, especially in the Menindee town weir pool. This has been a flash point and a contributing factor in multiple mass fish deaths over the past decade. As part of the NSW Government’s response to the Office of the Chief Scientist and Engineer's (OCSE) Independent Review into the 2023 Mass Fish Deaths in the Darling-Baaka River at Menindee, NSW DPIRD Fisheries is leading two key initiatives to restore fish passage and system connectivity within the Menindee Lakes and Lower Darling-Baaka. This presentation will detail how both the trial of temporary innovative fish passage technology (Fishheart) and investigations into permanent fish passage solutions are being developed in tandem to inform management and ecological objectives for restoring connectivity between the southern and northern Basins.