Freeze Dried Bloodworms

The Pros and Cons of Freeze Dried Bloodworms

Freeze dried bloodworms for feeding fish like Tetras was briefly in vogue among a certain set of fish lovers not too long ago.  This era, however, soon passed as more and more fish caretakers started to discover the problems with bloodworms of the freeze dried variety.  So what are the benefits and drawbacks of using freeze dried bloodworms for your fish?



The main benefit from using freeze dried bloodworms is that it does tend to make them last longer and they are relatively easy to keep.  Because most of the water is removed when using this process, it keeps the bloodworms from the usual methods of decay.  This also tends to make it easier for companies to ship such worms long distances.

Many fish caretakers, however, claim that there is not much difference between the longevity one gets from frozen bloodworms versus freeze dried bloodworms.  In addition, many fish caretakers also claim that the quality is much better for frozen worms versus their freeze dried cousins.

Quality of Freeze Dried Bloodworms versus other Types

One of the main reasons that many fish lovers don’t like the freeze dried kind of bloodworms is because of what it does to the quality of the worms.  The process of freeze drying is, to begin, fairly harsh.  Removing all of the water from a recently living organism tends to make the remaining matter rather chalky.  In fact, in order to feed the worms to your fish you will have to soak them in water first in order to make them back into an appetizing prospect.  The problem with this is the worms do not soak up the water like sponges.  They take some of the water in but often they become bloated with internal pockets of water.

This definitely creates some issues for your Tetra and Goldfish.  Some picky fish will shy away from such an unappetizing, odd looking worm sensing that something is amiss.  Others will eat some of it but leave large chunks uneaten at the tank’s rocky bottom, leading to greater problems with tank cleanliness and bacteria.  There are also problems with the fish that do eat the bloodworms, as the pockets of water in the worms can lead to bloat in the fish and destabilize their health.  This will usually not lead to fish deaths by itself, but if some other health problem arises, the combination of the two could certainly be a concern.

Frozen bloodworms do not have the same problem, though they are also not the best recommendation.  Actually, your best bet is going with a fresh container of bloodworms.  If you keep them in your refrigerator, the coolness is sure to make them last quite a while—certainly long enough to feed your little underwater darlings.  In addition, when you remove them from their container, they will move around a bit—especially if you cut them in half, and this make for much more natural and appetizing treat for your fish or even turtles.

Studies have not been done, but if they were, you would probably find that much more protein is transmitted through fresh bloodworms than through dead ones.

Health Concerns

One final consideration when it comes to freeze dried bloodworms has to do with human health.  There have been some reports of human caretakers having strong allergic reactions from handling the freeze dried bloodworms.  The general belief is that some people may be allergic to the dust that develops from the freeze drying process.

With so many negatives, it is clear that any caring owner of Tetras should seek fresh worms rather than freeze dried worms.