Shrimp mix, also known as European shrimp mix, is a term for a class of frozen fish feed used for fish with special dietary requirements, e.g. Tropheus

Tropheus

Tropheus is a small genus of six species of cichlid fish endemic to Lake Tanganyika in East Africa. The genus Tropheus is widespread across all regions of lake Tanganyika, from Burundi in the North to Zambia in the South.Males and females are relatively similar but do display obvious sexual...

, which are difficult to maintain using normal fish feed. The basic version, is intended for herbivorous fish and is made by blending equal amounts of whole shrimp and green peas to a smooth paste, adding a vitamin supplement, and using either agar-agar or gelatin as binder. There are numerous variants tailored to the specific needs of different species. Common variants replace part of the shrimp or peas with fish meat, spinach, spirulina

Spirulina

Spirulina may refer to:* Spirulina , a health-food supplement* Spirulina , a cyanobacterium group* Ochthephila spirulina, species of gastropod in the Hygromiidae family...

, or mussel meat, and add astaxanthin

Astaxanthin

Astaxanthin is a carotenoid. It belongs to a larger class of phytochemicals known as terpenes. It is classified as a xanthophyll, which means "yellow leaves". Like many carotenoids, it is a colorful, lipid-soluble pigment. Astaxanthin is found in microalgae, yeast, salmon, trout, krill, shrimp,...

, ascorbic acid

Ascorbic acid

Ascorbic acid is a naturally occurring organic compound with antioxidant properties. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. Ascorbic acid is one form of vitamin C. The name is derived from a- and scorbutus , the...

, or garlic.