Stenogobius genivittatus (Valenciennes)

Chinstripe Goby (Stenogobius genivittatus)

The Chinstripe Goby is an endemic species of the Society Islands, where it occurs on the islands of Mo’orea and Tahiti.

The species lives in freshwater in streams and estuaries and wanders well upstream, however, it is not able to overcome natural barriers like waterfalls and is thus restricted to the lower reaches of the streams near the sea.

The Chinstripe Goby reaches sizes of about 4,8 to 8 cm.

The species feeds on insects, crustaceans and smaller fishes. [1]

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References:

[1] R. E. Watson: A provisional review of the genus Stenogobius with descriptions of a new subgenus and thirteen new species. (Pisces: Teleostei: Gobiidae). Records of the Western Australia Museum 15(3): 627-710. 1991

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stenogobius-genivittatus-jmg

Depiction from: ‘Albert C. L. G. Günther: Andrew Garrett’s Fische der Südsee. Journal des Museum Godeffroy 4(2). Hamburg: L. Friederichsen & Co. 1873-1910’

(not in copyright)

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Giuris margaritacea (Valenciennes)

Snakehead Gudgeon (Giuris margaritacea)

The Snakehead Gudgeon is the only species of its genus, it is widely distributed over large parts of Asia as far away as Australia and beyond, and inhabits flowing and stagnant freshwater bodies with dense plant growth.

The fish reaches a length of about 23 cm.

The Snakehead Gudgeon feeds on various smaller animals but also on algae.

The species, like almost all of the Polynesian goby- and sleeper goby species, has a pelagic marine larval stage, that means the larvae live among the marine plankton for several months, and then return back into their birth rivers.

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The Hoofprint Goby (Lairdina hopletupus Fowler) from the Sigatoka river on the island of Viti Levu, described in 1953 as a distinct species, is now regarded as a synonym.

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giuris-margaritacea-dpr

Photo: Dr. Paddy Ryan; by courtesy of Dr. Paddy Ryan

http://www.ryanphotographic.com