Anyone for seabass and chips? Scientists urge Brits to replace classic cod, haddock and hake with more sustainable alternatives

Forget cod or haddock – you could be served seabass the next time you order fish and chips. 

The Marine Conservation Society has released its latest Good Fish Guide, revealing the fish you should, and shouldn't be eating. 

According to the guide, ratings for several popular white fish have plummeted, including coley, hake, Dover sole, and haddock. 

Instead, the guide recommends opting for Alaskan pollock, monkfish, or seabass.

Kerry Lyne, Good Fish Guide Manager at the Marine Conservation Society, said: 'The status of fish stocks are continuously changing, and for consumers, it means that simply choosing a species isn't enough. 

'A fish that was a good choice a few years ago is not necessarily a good choice everywhere today. 

'Ratings on the Good Fish Guide show the latest scientific advice depending on the species, and where and how its caught or farmed.'

The Good Fish Guide reveals ratings for popular fish based on three key factors: what it is, where it was caught or farmed, and how. 

The ratings use a scale from one to five, with one being the 'Best Choice' and five being 'Fish to Avoid'. 

According to the latest edition, several white fish that have previously been recommeded as more sustainable alternatives to cod have dropped down the rankings. 

Europen hake has moved from green to amber due to declining stocks and increased fishing pressure. 

Coley (also known as Saithe) caught around the UK has been rated red due to population decline, while Northeast Arctic coley has also dropped further down the scale.

Haddock caught in waters around Iceland – the biggest importer of haddock to the UK – has dropped from green to amber due to fishing pressure above sustainable levels and catches remaining above scientific advice. 

However, haddock caught across the North Sea, Skagerrak and Scottish waters – the second biggest source of haddock to UK consumers – remains green rated.

In contrast, the Marine Conservation Society recommends Alaska pollock from the Gulf of Alaska or the Bering Sea, monkfish caught in the North Sea, Rockall or West of Scotland, and most seabass.

'Avoid seabass from the West of Scotland and West of Ireland due to poor stock,' it advised. 

In terms of shellfish, it advises opting for European lobster from Jersey and certified by the MSC, alongside Shetland MSC–certified brown crab, UK farmed blue mussels and UK RAS farmed king prawns.     

'The best thing we can all do if we eat seafood, is diversify our seafood choices and avoid those most under threat,' Ms Lynne added. 

'We need the UK Government to ensure better management is in place to recover and protect UK fisheries, many of which are in decline.' 

To understand how sustainable your favourite fish is, you can explore the Good Fish Guide here.