The diets of 6,000 children in Britain were studied by academics at the University of Bristol to identify whether or not there was a link between seafood consumption and cognitive function and development in children.

Researchers found that eating fish has a “positive effect on child development” and is linked to better behaviour and friendliness in primary school-aged children due to its omega-3 fatty acids, selenium and iodine.

The study revealed that 7.2 per cent of children ate no fish every week, 63.9 per cent ate one to 190 grams per week, and 28.9 per cent consumed more than 190 grams of fish each week.

Fish fingers, or similar products like battered fish, made up almost half of the average total intake

The study determined that children who ate no fish were more likely to display “suboptimal prosocial behaviour” and were also more likely to be hyperactive.

The study’s author, Dr Caroline Taylor, an associate professor in nutrition at the University of Bristol, said: “Our previous studies have shown that eating fish during pregnancy in the UK can have a positive effect on child development.

“Our evidence to link fish consumption in children with the best behavioural development is clear, and we strongly recommend parents to provide at least two portions of fish a week in accordance with NHS guidelines.

“We hope these research findings empower parents with the knowledge to give their children the best start in life.”