Larvae that received FMT was more susceptible to hyperlipidemia, which was driven by Stenotrophomonas maltophilia and Enterococcus faecalis, evidenced by the increase in lipid droplet accumulation, while inoculation of E. faecalis in zebrafish larvae with myd88 knockdown showed significantly less lipid droplet accumulation. Here, MYD88 is linked to hyperlipidemia.