NOVELTY - An isolated microorganism (MO1) of the species selected from Pseudozyma aphidis, Pseudozyma rugulosa, Sporidiobolus pararoseus, and Rhodotorula ingeniosa that is capable of producing a microbial oil comprising saturated fatty acids (less than 30 wt.%).    USE - As an isolated microorganism that produces microbial oil and fatty acids useful in the manufacture of a food, supplement, cosmetic, or pharmaceutical composition for a non-human animal or human (claimed). Also useful in inductrial applications. The food includes milks, ice creams, yogurts, drinks, creams, spreads, whiteners); soups; doughs, batters, and baked food items; hard confectionery; chocolate and other confectionery, chewing gum; liquid food products, like energy drinks, infant formula, carbonated drinks, teas, liquid meals, fruit juices, fruit-based drinks, vegetable-based drinks; multivitamin syrups, meal replacers, processed meat products; processed poultry products. The animal feed includes, aquaculture feed, domestic animal feed including pet feed, a zoological animal feed, a work animal feed, a livestock feed.    ADVANTAGE - The isolated microorganism is capable of producing fatty acids in an amount that is at least 30 (preferably 40, especially 50, particularly 60) wt.% of dry cell weight. The microorganism is capable of producing a microbial oil comprising oleic acid (greater than 30, preferably 40, especially 50, particularly 60) wt.%. The microorganism is capable of producing microbial oil comprising linoleic acid (greater than 5, preferably 10, especially 15) wt.%. The microorganism is capable of producing a microbial oil comprising saturated fatty acids (less than 25 wt.%). The microorganism is capable of producing a microbial oil comprising palmitic acid (less than 25, preferably 20, especially 15) wt.%. The microorganism is capable of producing a microbial oil comprising long chain polyunsaturated fatty acids (less than 10) wt.% of greater than or equal to 20 carbon chain length. The isolated microorganism reduces costs associated with the production of beneficial fatty acids for dietary, pharmaceutical, and cosmetic uses.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: 1)an isolated microorganism (MO2) of the species selected from Pseudozyma aphidis, Pseudozyma rugulosa, and Rhodotorula ingeniosa, that is capable of producing fatty acids in an amount that is at least 30 wt.% of dry cell weight; 2)an isolated Sporidiobolus pararoseus is capable of producing fatty acids in an amount that is at least 50 wt.% of dry cell weight; 3) an isolated microorganism (MO) deposited under ATCC Accession No. (PTA-11615), (PTA-11616), or (PTA-11617); 4) an isolated microorganism having the characteristics of the microorganism (MO); 5) an isolated biomass comprising the isolated microorganism; 6) culture comprising the isolated microorganism or its mixtures; 7) producing (M1) microbial oil, involving growing the isolated microorganism or its mixture in a culture to produce a microbial oil; 8) producing a microbial oil, involving extracting the microbial oil from the isolated biomass; and 9) microbial oil produced by the method (M1).