Inu (fish)

Inu
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Division:	Teleostei
Order:	Gobiiformes
Family:	Oxudercidae
Subfamily:	Gobionellinae
Genus:	Inu; Snyder, 1909

Inu is a small genus of gobies native to the northwestern Pacific Ocean. They are closely related to Luciogobius.This genus and Luciogobius have a lot of characteristics in common; dorsally-flat head, absence of first dorsal fin, finely segmented vertebrate and so on. Due to this similarity, some scholar integrate this genus into Luciogobius, while some phylogenetic studies support its division with Luciogobius.

Alike Luciogobius, the species of Inu dwell in pebble beach or rocky shore, which provide a plenty of gravel-interstitial spaces. However, it is often pointed out that species of Inu tend to avoid exposing to the air compared to Luciogobius.

Species

There are currently three recognized species in this genus:

Inu ama Snyder, 1909
Inu koma Snyder, 1909
Inu saikaiensis (Dôtu, 1957)

References

↑ Snyder, J.O. (1909) Descriptions of new genera and species of f ishes from Japan and the Riu Kiu Islands. Proceedings of the United States National Museum, 36(1688): 597–610.
1 2 3 4 Shibukawa, N.; et al. (2020). "Comparative morphology, validity, and limits of the genus Inu Snyder, 1909 (Gobiiformes, Oxudercidae), with comments on the diversification of the related interstice-dwelling goby genera in Japan" (PDF). Bull. Mus. Nat. Env. Hist. Shizuoka. 13: 79–116.
↑ Yamada, T.; et al. (2009). "Adaptive radiation of gobies in the interstitial habitats of gravel beaches accompanied by body elongation and excessive vertebral segmentation". BMC Evolutionary Biology. 9 (1): 145. Bibcode:2009BMCEE...9..145Y. doi:10.1186/1471-2148-9-145. PMC 2709658. PMID 19558710.
↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Inu". Catalog of Fishes. California Academy of Sciences. Retrieved 1 October 2025.

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[1] Snyder, J.O. (1909) Descriptions of new genera and species of f ishes from Japan and the Riu Kiu Islands. Proceedings of the United States National Museum, 36(1688): 597–610.

[Shibukawa-2] 1 2 3 4 Shibukawa, N.; et al. (2020). "Comparative morphology, validity, and limits of the genus Inu Snyder, 1909 (Gobiiformes, Oxudercidae), with comments on the diversification of the related interstice-dwelling goby genera in Japan" (PDF). Bull. Mus. Nat. Env. Hist. Shizuoka. 13: 79–116.

[Yamada-3] Yamada, T.; et al. (2009). "Adaptive radiation of gobies in the interstitial habitats of gravel beaches accompanied by body elongation and excessive vertebral segmentation". BMC Evolutionary Biology. 9 (1): 145. Bibcode:2009BMCEE...9..145Y. doi:10.1186/1471-2148-9-145. PMC 2709658. PMID 19558710.

[4] Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Inu". Catalog of Fishes. California Academy of Sciences. Retrieved 1 October 2025.