I do feed my fish freeze dried fish.
I have a question: Does freeze drying kill the pathogens present in live food ? Live Tubiflex worms are known to cause disease, would freeze dried food reduce the risk of disease?
Yes, freeze drying does kill off bacteria on the food, and even though freezedried foods tend to be more healthy than fish flakes, there are a couple of other factors to take into consideration;
a. Dried high protein foods of any sort, wether they are fish flakes or freezedried foods like bloodworms, are more likely to cause constipation in a fish than fresh foods. You can feed freezedried foods as often as you like to most fish as long as you feed them alot of veg to balance it out as feeding veg based foods will help prevent constipation.
b. Fresh foods like live tubifex can bring in various fish deseases, but as far as im aware these are killed off as long as the tubifex are killed by freezing. The best thing about fresh/frozen foods is they are very nutritional and natural for fish to eat and amoungst some of the best foods you can feed your fish.
c. Freezedried foods can go stale just as much as fish flakes, freezedried foods and fish flakes can be kept for much longer though if you put them in the fridge or freezer.
A varied healthy diet is often the key for healthy and happy fish, there are no fish that i can think off that actually benefet from having a fish flake only diet, not even goldfish or guppys do- in the past i used to feed my fish alot of fish flakes, now days the fish flakes are only there to add variety to my fish's high veg and protein diets and not the other way around
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