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Territorial dispute of Sinogastromyzon wui

Posted: Sun Nov 29, 2009 5:12 am
by odyssey
They do not move about a wide area.
Because each other's territory leaves, they do not usually fight very much.
In the fast flowing stream, the one which is crept in below will be cruised from the surface of the rock.

They like bloodworms, and does not graze algae very much.
But sheen of the algae grazing came out this time, too.
Youtube
http://www.youtube.com/watch?v=nGDXRn3H18c


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Posted: Sun Nov 29, 2009 7:21 am
by ch.koenig
hi odyssey
great!!! very interesting video. in the second part the species looks much like puliensis - which it is certainly not. but the close relationship is visible here by the pattern-resemblance too. as it's hard to have pictures of wui's it's high time for some more videos (apart of my marginal, short ones on youtube).
onother thing much more important and valid for all "suckers" is visible here: they don't suck with special formed fins. all "suckers" get hold on the substratum with the structures (J. Freyhof calls them "gecko-like") on the brim of the pectoral- and ventral-fins. I've been arguing about this fundamental error with some ichthyologists for a long time. in lack of better knowledge, experts copied the error the last 150 years. reminds me my studies in history with incredible naive - or interst-linked - repetitions of the same "facts", written in stone.
as a worker of stone I can state this: "suckers" can perform a suction effect on plain glass with the body

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spotted sucking on glass with the body

they can cling to glas with the fin structures (youngsters without a completly formed "suckingg"-body do so too)

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sinogastromyzon wuis on the frontglass, one gliding over the other in the ouput section of a 1200 lt-eheim power-head

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viriosus with contrast colours. the contact-area marking violet. once without "help" of fins, once with the hole program.

but they could never do this on a natural. not perfectly sanded stone.
cheers charles

Posted: Sun Nov 29, 2009 12:01 pm
by Jim Powers
Very interesting!
I have never seen my S. wui graze like that.