I know to avoid seafood/fish flavors for the most part for various reasons, but I'd like to work it into my kittens wet food rotation every once in a while as a treat. Is there a specific type that is known to be less harmful than others? I was thinking shrimp since it's really low on the food chain but I don't know if I'm actually right. What information can you guys tell me? I know tuna has a lot of mercury so I will be avoiding that and I've heard that salmon can potentially come from pretty filthy conditions.