Barriers to fish movement represent a key threat to fish populations in our region.
Many of Australia's native freshwater fishes need to move in order to breed and survive. Structures such as dams, weirs, causeways and road culverts can act like road blocks, preventing fishes from moving upstream. Even a small drop of 20cm over a causeway can stop fishes moving upstream.
The rivers and streams of the NQ Dry Tropics region drain a tremendous diversity of tropical landscapes: semi-arid dry lands, wooded grasslands, mountainous tropical rainforests, coastal plains and wetlands.
Barriers to fish movement represent a key threat to fish populations in our region.
