This project seeks to trial the use of protein inputs from freshwater and marine algae and aquatic plants for use either individually or in various combinations in the formulation of an alternative protein fish product. The specific target species and cut for this product is an Atlantic salmon fillet. Therefore, algal biomass that contains the salmon-coloured pigment astaxanthin or astaxanthin extract on its own may be also trialed as ingredients. Overall, the physical, chemical and gelling properties of the different input materials will be characterized.