:Graham's gudgeon

{{Short description|Species of fish}}

{{Use New Zealand English|date=July 2024}}

{{Speciesbox

| image = Graham's Gudgeon imported from iNaturalist photo 10191785 on 19 October 2024.jpg

| image_caption =

| genus = Grahamichthys

| parent_authority = Whitley, 1956{{Cof record|genid=7142|title=Grahamichthys|access-date=29 July 2018}}

| species = radiatus

| authority = (Valenciennes, 1837)

| synonyms =

• Grahamichthys radiata
• Eleotris radiata Valenciennes 1837

| synonyms_ref = {{FishBase|Grahamichthys|radiata|month=June|year=2018}}

}}

Graham's gudgeon, Grahamichthys radiatus, is a species of goby of the family Thalasseleotrididae, the only member of the genus Grahamichthys. This species is found in rock pools and in the neritic zone, to {{convert|50|m|ft}} in depth, where sand or mud is lies around and partially buries rocks, shells, or other objects. It is unusual for a goby, in that it lives in loose schools.{{cite book | author = Helen K. Larson | year = 2011 | chapter = Introduction | editor1 = Patzner, R. | editor2 = J.L. Van Tassell | editor3 = M. Kovacic | title = The Biology of Gobies | publisher = Verlag Science Publishers | isbn = 978-1-57808-436-4 | chapter-url =https://books.google.com/books?id=M_HRBQAAQBAJ&q=Grahamichthys+radiata&pg=PA239}}