…a prawn a day.

https://www.nationalacademies.org/our-work/the-role-of-seafood-in-child-growth-and-development?utm_medium=email&utm_source=govdelivery#sectionWebFriendly

Shellfish is shown to be important but conclusion here says from wild fisheries with no supporting reasons…phytates in prawn feed anti nutrients just like for humans…

https://www.sciencedirect.com/science/article/pii/S0033062022000834