Chaenogobius annularis

Chaenogobius annularis, the fork-tongued goby, is a species of goby from the subfamily Gobionellinae which is found in the brackish waters of temperate eastern Asia. It is the type species of the genus Chaenogobius.

Chaenogobius annularis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gobiiformes
Family: Oxudercidae
Genus: Chaenogobius
Species:
C. annularis
Binomial name
Chaenogobius annularis
Gill, 1859[2]
Synonyms[3]
  • Gobius dolichognathus Hilgendorf, 1879
  • Chaenogobius dolichognathus (Hilgendorf, 1879)
  • Chasmichthys dolichognathus (Hilgendorf, 1879)

Description

Chaenogobius annularis has a light brown head and body with six, or so, broad vertical bands along the body and with several small, dusky spots and a distinct blotch on the caudal peduncle. The dorsal fins are light brown with darker, sinuous horizontal bands while the caudal and pectoral fins are also light brown but are marked with darker vertical bands. It grows to a maximum total length of 16 centimetres (6.3 in).[3]

Distribution

Chaenogobius annularis occurs in temperate eastern Asia including Russia, China and the Korean Peninsula as well as the islands of Japan, the Kuril Islands and Sakhalin.[1]

Habitat and biology

Chaenogobius annularis is a species of brackish water where it has a demersal habit.[1] It occurs along intertidal rocky shores and in rock pools and it is one of the commonest intertidal fish species in the temperate coastlines of the Japanese Archipelago.[4]

Conservation

As it has a large distribution and there are no threats to this species known, the IUCN have assessed C. annularis as Least Concern.[1]

Etymology

The generic name Chaenogobius is a compound of the Greek chaeno meaning "gape" and gobius or goby while the specific name annularis is Latin meaning "ringed", referring to the transverse bands on its body.[5]

References
  1. Devi, R.; Boguskaya, N. (2009). "Chaenogobius annularis". The IUCN Red List of Threatened Species. 2009: e.T169615A6654513. doi:10.2305/IUCN.UK.2009-2.RLTS.T169615A6654513.en.
  2. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Chaenogobius annularis". Catalog of Fishes. California Academy of Sciences. Retrieved 31 July 2018.
  3. Froese, Rainer and Pauly, Daniel, eds. (2018). "Chaenogobius annularis" in FishBase. June 2018 version.
  4. Atsunobu Murase; Ryohei Miki; Hiroyuki Motomura (2017). "Southern limits of distribution of the intertidal gobies Chaenogobius annularis and C. gulosus support the existence of a biogeographic boundary in southern Japan (Teleostei, Perciformes, Gobiidae)". ZooKeys (725): 79–95.
  5. Christopher Scharpf & Kenneth J. Lazara (6 December 2017). "Order GOBIIFORMES: Family OXUDERCIDAE (a-o)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara.
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