I show pictures because I took a photo underwater in the river of Japanese Izu Peninsula. last month.
Because the Kuroshio Current flows through the sea near the shore, the district is comparatively warm.
It is uploaded video clip to YouYube as always.
The sweetfish which grazes algae. Plecoglossus altivelis altivelis
Japanese fluvial sculpin. Cottus pollux.
Rhinogobius so CO
Tridentiger brevispinis and Sicyopterus japonicus.
Rhinogobius and Sicyopterus japonicus.
Amur Minnow. Phoxinus logowskii steindachneri
Japanese mitten crab. Eriocheir japonica
Freshwater Prawn. Macrobrachium sp ?
The small prawn would think one's reflected image reflected in the lens surface to be a rival.
The water temperature was about 20 degrees Celsius.
I do not do the water test, but this river has a big hot spring upstream.
An ingredient of the hot spring may be what is advantageous to the breeding of the alga.
Because both eat an adhesion alga, sicyopterus goby and the sweetfish are rivals.
I heard that both did a territorial dispute frequently, but a fight was not seen at all in this river.
Everybody enjoys it, and I am glad.
I think that the menace of Catfish does not matter much.tyrano34 wrote:Your goby fish are in danger?
The worst foreign fish in Japan is a large-mouth bass.
However, as well as Japan, a menace of gobies is natural destruction by the human being.
I photographed the pictures mentioned above in the plural rivers of Izu Peninsula.tyrano34 wrote:could you give us information on the fishing grounds.
Would you parameters of the water?
You can confirm a lot of rivers of Izu Peninsula when you lose expansion.
http://maps.google.com/maps/mm?hl=en&ie ... 436218&z=9
I do not know parameters of the water.
Thanks for your videos on youtube, I could explore the Japanese Internet and I saw that a word that often return to the subject of gobies.
ボウズハゼ: that word mean, if you please
Bouzu means a Buddhist priest, and Haze means a goby.
The origin of the name is a meaning called the goby of the shaven head or a meaning called the goby of the vegetarianism.
"ボウズハゼ" means Sicyoputerus concretely.
"Nanyou" means South Seas.
"ナンヨウボウズハゼ" is a meaning called Sicyoputerus of the South Seas.
However, actually it is Stiphodon percnopterygionus or the Stiphodon genus as a fish class.
an interesting specimen of 7 cm, female with 5 cm (may be I've two with different colours
on a german website - with breeding infos - they are identified (with doubts) as r leavelli. I doubt it. as M. Kottelat doesn't identify rhinogobius by pics I'm stuck. more pics are on seriouslyfish.com.
seems to be a freshwater species without pelagic larves, but it seems to be hard to make them survive. I found two other pics on the web, one with the id as r sp OR (from Japan) which is certainly wrong. no way to fix the origin. south of china is the most probable as the first female came in with pseudagastromyzon cf cheni=p fasciatus, peristictus, myersi mix.
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