Frozen blood worms are nutritious source of protein for many different types of freshwater fish, including goldfish, freshwater pufferfish, and a diverse range of tropical community fish – and they don’t pose the risk for serious fish problems like some other varieties of worms, assuming that they are acquired from a reputable source that raises their feed worms in sanitary conditions. I like using Hikari brand blood worms, and Sally’s San Francisco blood worms.
1. Fill a container with tap water to thaw the frozen blood worms.
2. After thawing, strain the blood worms through a thinly-woven fish net until all of the water is removed from the cup. I like to use brine shrimp nets for this step, but any fish net with a small weave will work.
3. While they are still in the fish net, run the blood worms under water to rinse a large portion of the juice. The juice the blood worms are frozen in can quickly pollute your tank – washing the blood worms off makes a cleaner meal.
4. Fill the container up again with fresh water – treat the new water with a quality tap water conditioner, I like using the small bottles of Prime because they are measured out per drop, which is especially handy for small containers of water.
5. Place the washed blood worms back into the cup of water.
6. Use a turkey baster to deliver the blood worms to your fish.
7. Wash your hands thoroughly after using blood worms. There are different methods of cultivating blood worms, and some of them are quite unsavory – they thrive in oxygen poor water, and are sometimes encouraged to culture using a slurry of chicken feces.
I personally don’t like using freeze-dried blood worms for my fish. However, they can make a great addition to gel food recipes because they’re an easy ingredient to mix in, and they plump up well when introduced to the gelling agent. If you choose to use freeze-dried blood worms as a supplement for your fish, make sure you take the time to presoak them in water to avoid fish problems.
Please note that it is possible for sensitive individuals to have a very bad allergic reaction to both frozen and freeze-dried blood worms – dealing with thawed blood worms is very messy because it’s difficult to contain the juices, and freeze-dried worms create a powder-like dust that can quickly go airborne.
If you are unsure of your sensitivity to the worms and their juice, make sure you consult with your physician for an allergy test. I am not allergic to blood worms, however, I still wear gloves when I am dealing with them because I don’t want to develop an increased sensitivity from repeated exposure.
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