NOVELTY - An isolated Chlorococcum species having: (a) an optimal growth temperature over 40 degrees C; (b) the ability to grow in a high carbon dioxide (CO2) environment; (c) an ability to accumulate large quantities of lutein; and (d) an ability to assimilate large quantities of nutrients selected from nitrogen, phosphorus, or inorganic carbon; its progeny, or its derivative mutant strains; is new.    USE - The isolated species of Chlorococcum, Scenedesmus, Palmellococcus, Cylindrospermopsis, and Planktothrix algae are useful for simultaneously removing nutrients from wastestreams and producing algal proteins and biomass components. Specifically, Chlorococcum is useful for assimilating nitrogen, phosphorus, and inorganic carbon and accumulating lutein. Scenedesmus is useful for accumulating lutein, zeaxanthin, and astaxanthin. Palmellococcus is useful for accumulating astacene. Cylindrospermopsis is useful for assimilating nitrogen, phosphorus, and inorganic carbon and accumulating protein mass, phycocyanin, allophycocyanin, and phycoerythrin. Planktothrix is useful for assimilating nitrogen, phosphorus, and inorganic carbon and accumulating protein mass, phycocyanin, allophycocyanin, and phycoerythrin (all claimed).    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are: (1) an isolated Scenedesmus species having: (a) an ability to grow in a high CO2 environment; and (b) an ability to accumulate carotenoids selected from lutein, zeaxanthin, or astaxanthin; its progeny, or its derivative mutant strains; (2) an isolated Palmellococcus species having: (a) an ability to grow in a high CO2 environment; and (b) an ability to accumulate astacene; its progeny, or its derivative mutant strains; (3) an isolated Cylindrospermopsis species having: (a) an ability to assimilate large quantities of nutrients selected from nitrogen, phosphorus, or inorganic carbon; (b) an ability to accumulate large quantities of protein mass; and (c) an ability to accumulate phycobiliproteins selected from phycocyanin, allophycocyanin, or phycoerythrin; its progeny, or its derivative mutant strains; (4) an isolated Planktothrix species having: (a) an ability to assimilate large quantities of nutrients selected from nitrogen, phosphorus, or inorganic carbon; (b) an ability to accumulate large quantities of protein mass; and (c) an ability to accumulate phycobiliproteins selected from phycocyanin, allophycocyanin, or phycoerythrin; its progeny, or its derivative mutant strains; (5) a substantially pure culture comprising a growth medium and any of the isolated algae above; (6) a system comprising a photobioreactor and the substantially pure culture above; (7) a method for removing nutrients from wastestreams comprising adding a waste stream to the substantially pure culture above, where nutrients in the waste stream are removed by the algae present in the culture; (8) a method for producing biomass comprising: (a) culturing the algae in the system above; and (b) harvesting algal protein and/or biomass components from the cultured algae; and (9) a method for simultaneously removing nutrients from wastestreams and producing biomass comprising: (a) adding a waste stream to the substantially pure culture above, where nutrients in the waste stream are removed by the algae present in the culture; and (b) harvesting algal protein and/or biomass components.