Turmeric is known to remove fishy smell but lemon will help to get rid of it. It will also make the squid’s skin brighter. Also in adding vinegar to wash seafoods, it will help remove the fishy smell. Put 2 teaspoons of vinegar into water that you will use to wash the squid, fish or shrimp and just leave it for 10 mins and wash them by clean water again.
That is a new thing to learn, by adding vinegar to wash seafoods like the squid.
I have learned about it when I got older. I even wash some fresh vegetables with vinegar on the water to remove bacterias. 
Is it the same like adding 2 tablespoon on the water before washing? For veggies too… Great
It depends on how much water you will use for washing. With little veggies, you can add one tablespoon and soak for a little time before washing.