If you sell fish and shrimp separately, just find a seafood pool. If you have fish, shrimp, crabs and all kinds of shellfish, you can't find anyone who can make an effective seafood pool! Because people who do seafood pool don't understand seafood, they won't make seafood pool with satisfactory results!
Designed by myself.
Let them do it and don't know how to use it.
Just go to any one in the market and simply make a few. Talk is better than nothing!