NOVELTY - A Chlorella ENN11-3 strain (Nannochloropsis species), preserved in the China microorganism bacterial strain preservation management committee common microorganism center (CGMCC) on preservation date 9-5-2012 under preservation number CGMCC No. 6446, is new.    USE - In the production of fatty acid, where fatty acid is capric acid, lauric acid, acid, palmitic acid, palmitoleic acid, bean stearic acid, stearyl acid, linolic acid, gamma-linolenic acid, arachidonic acid and/or eicosapentaenoic acid, in the production of biofuel such as biodiesel or bio-ethanol, in the environmental protection, preferably environmental protection is CO2; for fitting in high temperature cultures, where the high temperature is 35-42 degrees C; for preparing capric acid, lauric acid, acid, palmitic acid, palmitoleic acid, bean stearic acid, octadecenoic acid, octadecadienoic acid, gamma-linolenic acid, arachidonic acid and/or eicosapentaenoic acid drugs, in the manufacture of medicament comprising eicosapentaenoic acids; and in aquatic product such as baits products (claimed).    ADVANTAGE - The strain has strong adaptive capacity to environment, has high temperature resistance, has high eicosapentaenoic acid grease content, has improved CO2 processing ability and hence is more suitable for industrial application and so on, and can be used for producing biological diesel oil production, in food, health product, feed product bait, and can be used for high temperature. The strain has stable performance, strong environment adaptability, has high temperature resistance and is suitable for industrial popularization; has good seed oil accumulation, has high oil content and hence is suitable for producing biological diesel oil; has high eicosapentaenoic acid content and hence is suitable for producing relative medicine, food, health products, feed, bait product and so on. The strain shows growth tolerance that is most audible at a temperature of 42 degrees C.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of strain.