Frozen Fish Food
Most are available as convenient small frozen cube sizes, and several types are also available in large frozen slabs. Gamma irradiation during the production process ensures that these foods do not pose a disease threat to the aquarium.
Small fish and fry will enjoy tiny foods like brine shrimp (Artemia nauplii) and cyclops, while most small and medium-sized fish will devour bloodworms, white mosquito larvae, vitamins and Mysis shrimp.
Krill, shrimp, cockles, mussels and spearfish are suitable for larger carnivores, with special formulas also available for cichlids and herbivores.
Remember that foods that contain a higher amount of protein will result in a higher amount of nitrogenous waste; therefore, it is recommended that for most fish, frozen food be offered only 2-3 times per week as a supplemental treatment.
A handful of similar foods are available in freeze-dried form and are stored on a shelf rather than in the freezer. Unfortunately, while still very nutritious, they seem to be a bit less appealing to fish compared to frozen foods.
Many freeze-dried foods tend to float, which is great for surface-dwelling species, but they may all be consumed before they reach lower-level fish.
Tetra Fresh Delica is a unique gel-based food consisting of bloodworms, daphnia or brine shrimp preserved in a nutrient-rich jelly.
They come in small sealed envelopes for convenient, hassle-free eating, and there’s no need to store these foods in a refrigerator or freezer. Like frozen food, they can be given as a treat to small fish 2-3 times a week.
