The Taiwanese who are the leading technologists in fish culture have identified spirulina as the best suited feed for prawn and shrimp larvac. Spirulina based feed reduces larval mortality and gives a good growth rate. Breeders of ornamental fish use spirulina to obtain better colouring.

  1. Spirulina can be used as a partial supplementation or complete replacement for protein in aqua  feeds.

  2. In the shrimp farming industry many feed additives have been utilized, but Spirulina is the only microalgae additive which demonstrates benefits to growers that offset the initial cost and provide a significant cost/performance ratio.

  3. Spirulina was studied as a feed supplement for the giant freshwater prawn (Macrobrachium rosenbergii), and found to significantly improve growth, survival, and feed utilization. The supplementation range was 5–20 percent and results were similar at any of the ranges added to the feed.

  4. Spirulina is a cheaper feed ingredient than others of animal origin.

  5. China is using spirulina as a partial substitute of imported feed to promote the growth, immunity and viability of prawns.

  6. Spirulina-containing feed was found to reduce the cultivation time and mortality, and increase shell thickness of scallop.

  7. The survival rate of abalone (Haliotis midae) was improved by 37.4 percent.

  8. Feeding on spirulina helped to improve disease resistance of high value fish resulting in an improvement in their survival rate from 15 to 30 percent.

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