Sea Carp

[Greyman 25,276]

Tidal Thames been producing big carp for years think many fish both sea and fresh water move in and out of brackish water 

[philpot 4,928]

I do believe many types of fish can tolerate salinity changes and fish such as mullet are found in the freshwater side of a sea loch locally and pike roach etc are found on the sea side of the loch and seem to survive well enough.  A few years ago whilst pumping black lugworm  on a Lincolnshire beach, my daughter found a baby pike in one of the pools left behing by the ebbing tide which must have come out from a drainage loch a couple of miles further over. This little fella was only 6 or 7 inches long and seemed fine, I had no option nut to leave it in the sea water as we were busy getting bait and a 4 mile hike did not appeal.