Fish cannot swim from the sea to the Onkaparinga River primarily due to barriers such as dams or weirs that obstruct their passage. Additionally, differences in salinity and water quality between the ocean and the river can be detrimental to the survival of many fish species. Furthermore, the river's flow and seasonal variations can also impact fish migration. Overall, these factors create significant challenges for fish attempting to move between these two aquatic environments.
No they cant it is impossible
all fresh water fish
because they use there tail to swim, and they don't have a tail on the front so they cant swim backwards.
fish, boat, swim.
Swim, fish, cruise etc
Yes, many fish live in the Amazon.
a fish can swim in the water for ever but a human cant
No they can't because they need to have salt in the water. So no sea fish cannot swim in the river.
samon swim up river to lay their eggs then they die
yes they do ok
Dan Villate cant swim init
no some swim upwards however they cant swim backwards but.. they do like to try. Whales have huge dongs.