Bostrychus aruensis

{{Short description|Species of fish}}

{{Speciesbox

| status = DD

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Larson, H. |date=2021 |title=Bostrychus aruensis |volume=2021 |page=e.T2894A147522559 |doi=10.2305/IUCN.UK.2021-1.RLTS.T2894A147522559.en |access-date=15 November 2021}}

| taxon = Bostrychus aruensis

| authority = M. C. W. Weber, 1911

| synonyms =

• Bostrichthys aruensis (M. C. W. Weber, 1911)

}}

Bostrychus aruensis, the island gudgeon, is a species of fish in the family Eleotridae, an endemic fish of the Aru Islands, Indonesia, where it occurs in both fresh and brackish waters. It grows up to {{convert|18|cm|in}} SL.{{FishBase |genus= Bostrychus|species= aruensis| month = April | year = 2013}}