https://www.verywellfamily.com/when-can-baby-eat-fish-284245 This will help with your enquiry above. There are many different cooking methods that you can try as long as it is safe for your little one and doesn't contain MSG, salt. You can also use homemade stock like anchovies, chicken, beef or purchase online from home based seller. In this way you can also try to cook other food for your little one. Here's the IG referral: https://instagram.com/chicknchovies?igshid=YmMyMTA2M2Y=
Any fish really. Salmon is great though. My kids have been eating sashimi and fish eggs since age 1.
Safe fish for babies : salmon. trout. canned, light tuna. sardines.