The D.C. fish market is back and open for business, with tight security and a whole new batch of rules.

The iconic fish stalls at the D.C. Wharf made national headlines last week when oblivious crowds flocked there, causing an immediate shutdown and a social media firestorm. After a brief lull and planning period, it has re-opened with stringent new guidelines for shoppers.

You need to call in your orders now, so have an idea of what you want. Most people get everything from Captain White's Seafood and Jessie Taylor Seafood if you're looking for something steamed. Shoppers will still be able to add raw items to their orders, but only 20 people will be allowed in the main stall area at a time. Have a face mask ready; you won't be admitted without one.

Unlike the previous week's crowd, visitors can now only enter through a single entry point (where the surface lot used to be) and will be spaced at least six feet apart in the line.

The new rules apply to parking, too—no more parking along Maine Avenue as you near the market. You need to continue on to the underground garage in the middle of the Wharf complex and take a ticket to be validated. It will be $2 per vehicle if you just show your fish stall receipt to the parking attendant.

What do you think about the new measures at the D.C. fish market? Will it be enough to keep things running smoothly and safely? Sound off in the comments!