The Species Black List
Stenogobius alleni
New Britain coastal stream goby
The New Britain coastal stream goby (Stenogobius alleni) is known only from ten specimens collected from a small freshwater stream in northeastern New Britain.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Actinopterygii Realm Papua-Melanesian Locality New Britain As IUCN records it Stenogobius alleni Watson, 1991 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