Bull Shark image by: Poytr
This is the fish ladder on the Lane Cove River. It is designed to assist native fish in traveling upstream. Unlike northern hemisphere fish like salmon, the natives aren’t known to jump up waterfalls. They don’t make the movies with the spectacular photogenic leaps.
The Australians usually just flip and flop up the rise. Now in the cold months, the Australian Bass are spawning downstream below the fish ladder. In a few weeks they’ll meet this weir, and will try to find a way upstream. It’s might take a bit of an effort to get on the fish ladder. It seems too high. But apparently, they can make it upstream at this place.
Bull sharks have been recorded below the weir. These are big, dangerous animals. As deadly to humans or more so than the Great White shark. The jumping mullet and Australian Bass would be on the menu for the sharks. The fresh water river above the weir has many records of the Australian Bass. No sharks above the weir (I hope).