winogradskyella exilis winogradskyella exilis winogradskyella exilis is a gram-negative, chemoorganotrophic, alkalitolerant and mesophilic bacterium from the genus of winogradskyella which has been isolated from the starfish stellaster equestris. winogradskyella exilis scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: winogradskyella species: w. exilis binomial name winogradskyella exilisivanova et al. 2010 type strain 022-2-26 synonyms winogradskyella exila