It's fish on the menu this Easter

Fifty thousand people are expected to flock to the Sydney Fish Markets (SFM) on what is the biggest trading day of the year.

"Good Friday is a very intense day. People associate Easter with seafood so what better place to come," SFM general manager Bryan Skepper said.

About 370 tonnes of seafood is likely to be sold on Friday.

"It's a big day because we do all of our trading in 12 hours," SFM supply manager Gus Dannoun said.

Although the markets officially opened at 5am, Mr Dannoun said people started arriving at the Pyrmont site at 3am.

"People were in early but there's plenty of seafood to go round for the rest of the weekend."

Last year's sales were estimated about $22 million, and Mr Dannoun expects it to be better this year.

And prices are on par with last year's.

Mr Dannoun said prawns were selling very well.

"Snapper has been popular, salmon is always a hit, and its close cousin the ocean trout, but also the yellow-tail kingfish," he said on Friday.

There's also good whole-size barramundi, swordfish, blue-eye trevalla and tuna.

"The displays are full," Mr Dannoun said.

"It's what we expect this time of year."

Mr Skepper added that Sydney's fish market was one of the only fish markets open in Australia on Good Friday.

Fishmongers certainly enjoy the Easter period. Australians are estimated to spend $24.4 million during the festive weekend.

According to business analysts IBISWorld, Australians want even more seafood this year, with consumption projected to jump 20 per cent from 2013.