Comments: Having kept fish for over 35 years there are few foods I haven't tried. Along time fan of Zoo Med for a multitude of reasons. Zoo Med uses top grade ingredients and the foods are made here in the United States.

Unlike so many imports from China Zoo Med foods are free of filler, sub par ingredients and what is most important free of Ethoxyquin. Ethoxyquin is a toxic pesticide often touted as a preservative - It's long been banned from dog and cat foods however due to poor regulation lower end foods continue to use it.

Studies have proven that Ethoxyquin even in trace amounts is especially lethal to fish. Studies that support this can be confirmed by simply looking ethoxyquin up on Wikipedia and follow the links to the findings.

Regarding Spirulina 20 - this is an outstanding, naturally color enhancing food. Packed with protein at 45% this food is perfect for fish ranging from African Cichlids to Fancy Ornamental Goldfish - both of which I keep in a never ending accumulation of fish tanks.

Spirulina is a plant based plankton often referred to as "the perfect food" it's packed with protein, vitamins A1, B1,B2,B6,B12 and vitamins C and E. In addition Spirulina is rich in eight essential fatty amino acids - it's a wonderfully healthy food.

The flakes are huge which makes feeding a breeze - I have a huge Red Devil Cichlid who goes crazy when he sees the jar. My Ornamental goldfish and other Cichlids are equally crazy for it.

Perfect for salt, fresh and brackish water fish - Spirulina 20 is an absolutely wonderful food which will enhance both the color and health of most any fish you keep.