The mytilid bivalve Fungiacava eilatensis Goreau, Goreau, Neumann & Yonge, 1968, previously mistakenly referred to as F. eilatensis Soot-Ryen, 1969, is reported for the first time from Indonesia. It lives as an obligate endosymbiont of mushroom corals, particularly Fungia spp., reef-dwelling corals restricted to the tropical Indo-Pacific. Notes are given on its asociation with different host species, its habitat, its biogeography, and possible competition with endosymbiotic gastropods belonging to the genus Leptoconchus (Coralliophilidae).
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