Are blood worms ok for saltwater fish?

[Myka]

Nutritionally speaking, saltwater organisms generally have a more complex amino acid profile than freshwater organisms. Bloodworms are freshwater critters and our reefs are saltwater so on paper bloodworms aren't the best choice as a staple diet. Does it really matter? Probably not, unless bloodworms make up a significant portion of the diet.

I don't normally feed them, but they are in my freezer because I used to enjoy training Mandarins to eat frozen food and I found some (few) took to Bloodworms better than Brine.