Method for liquid fuel production comprises an aqueous medium mixing with symbiotic complex, which contains an anaerobic bacterial plankton, phytoplankton and microplankton, which is taken from the natural range. Herewith at the temperature within the mesophilic values, to initiate further breeding and transfer this aerobic plankton to anaerobic, which has a fuel grade hydrocarbons in its cytoplasm, the liquid paraffins and light hydrocarbons mixture is once added in an amount sufficient to replace formed medium liquid with the liquid in the form of light paraffin hydrocarbon mixture. The resulting mixture fermentation under anaerobic conditions is carried out during the time which is sufficient for a spontaneous lysis the result of which is the liquid hydrocarbons isolation from the cytoplasm of plankton. Herewith, to accelerate the lysis, plankton pulp, which is formed during fermentation, extracted by contact interaction with the extractant as the long-chain paraffins and light hydrocarbons mixture.