The Species Black List
Stenogobius watsoni
Watson's coastal stream goby
Watson's coastal stream goby (Stenogobius watsoni) is known only from three islands in Milne Bay, southeastern New Guinea, where it lives in freshwater creeks.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Actinopterygii Realm Papua-Melanesian Locality Milne Bay As IUCN records it Stenogobius watsoni Allen, 2004 This species is one of 3,062 in a list of vertebrates the IUCN Red List records as Data Deficient or has never assessed, ranked by how narrowly restricted the published record says they are. The sentence above is the evidence the tier was read from, quoted from Matthew Richardson, Threatened and Recently Extinct Vertebrates of the World (2023).
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Check this species elsewhere: IUCN Red List · GBIF