There are fish in the waters of the Sid:
The Fishbrain website tells us what else to find in the River:
The most popular species caught here are European seabass, Dusky smooth-hound, and Tub gurnard. 13 catches are logged on Fishbrain. Please use your best judgement when determining where you can fish, and make sure you follow local regulations.
Their fishing report shows some pike caught in 2020: