TISO was well ingested by sandfish larvae in both live and concentrated forms
and live TISO was themost suitable of the microalgae tested in terms of ingestion and digestibility. All commercially
available microalgae concentrates tested were readily ingested and digested by H. scabra larvae with the
exception of Thalassiosira pseudonana (3H 1800®)whichwas not ingested by larvae of any of the three ages tested.
Our results show potential for using microalgae concentrates as alternatives to live microalgae in hatchery
culture of sandfish. However, further research should be conducted to assess the relative nutritional values of
digestible microalgae as a basis for optimising a diet for hatchery culture of sandfish, and to provide further
information on the nutritional requirements of sandfish larvae