Genome sequence of freshwater nontoxigenic Limnoraphis associated with microcystin-producing blooms.

•The complete genome of Limnoraphis sp. WA205, order Oscilllatoriales, was determined from a microcystin-containing CyanoHAB in a US Pacific NW freshwater reservoir (2019).•Large, 7.3 Mbp, genome with large numbers of genes for signaling and cellular processes, metabolizing various compounds, and transposases.•Presence of genes for gas vesicles, dinitrogen fixation (in the absence of heterocysts), phycocyanin and phycoerythrin, but not for cyanotoxins or geosmin.•In the US Pacific NW, Limnoraphis typically co-occurs in CyanoHABs with other cyanobacteria, often in the presence of microcystin.