Frozen bloodworms are a great food to feed your fish, but some people are dangerously allergic to them. Feeding blood worms to certain fish can also create deadly digestive problems. Feeding too many bloodworms can also create issues. This video looks at tiger barbs eating frozen blood worms, the aquatic larva of a non-biting midge fly, or a chironomus midge. Freeze-dried bloodworms are also available.
