Pro Shrimp's comment: Very popular treat for omnivorous fish and shrimp. Great protein source for shrimp and extremely popular. Since these have been vaccum freeze dried they are not as risky as feeding life or freshly frozen bloodworms.
Top-class supplementary food for very fastidious fish.
Vacuum drying method is gentle on the containing nutrients. Indispensable for fish breeding.
No risk of disease compared to living red mosquito larvae and less water pollution than when using frozen food.
Freeze-dried food has some advantages over frozen food and live food: It can’t transmit diseases and no bacteria can develop inside it, which happens quite quickly with thawed frozen food!