Are we consuming fish sprayed with chemicals?

I TOOK my family for dinner at a seafood restaurant in Bukit Rimau, Shah Alam on the 2nd day of CNY.  

As the restaurant was crowded and it will take a while before our food arrives, my son and I decided to walk to the side of the restaurant to see the arrival of live fish that were being transferred from the supplier’s lorry to the restaurant’s kitchen.