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loach ID
July 15, 2013
9:50 pm
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olly
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Please help me identify the species of this loach.
A year ago these loaches were purchased from a breeder together with a group of rosy loaches (concomitants, probably). Apparently, they also were bred in his tank. Unidentified loaches are slightly bigger than rosy loaches. The background color of the body is slightly rosy. Gray stripes across the body. Gray spots on the anterior part of the back. Bottom lifestyle. Territorial and at the same time they love to contact with each other. Practically always on sight. Unfortunately, I have only 3 males.
I failed to find what species or genues they belong to.
Thanks a lot for your help.schistura-sp.jpgImage Enlarger

schistura-sp2.jpgImage Enlarger

schistura-sp8.jpgImage Enlarger

 

schistura-sp3.jpgImage Enlarger

schistura-sp6.jpgImage Enlarger
schistura-sp9.jpgImage Enlarger

Together with rosy loach.

schistura-sp-rosy-loach.jpgImage Enlarger

Unidentified loach (above) and rosy loach (below), sm

schistura-sprosy-loach.jpgImage Enlarger

 

July 16, 2013
8:24 am
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Matt
Málaga, Spain
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Very cool Olly. Am just guessing but maybe another undescribed Petruichthys sp.? Kottelat mentions there is more than one in this paper.

Cake or death?
July 16, 2013
9:19 am
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torso
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HI

Physoschistura brunneana? Pic of a speciemen taken in the field in BSSW 3 2010, Rainer Hoyer.

Jörg Bohlen should know more about it.

Cheers Charles

July 18, 2013
11:23 pm
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olly
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Matt,

Charles,

Thank you very much!

Yes, my fishes looks like undescribed Petruichthys sp.

I failed to find a foto of Physoschistura brunneana, but found some papers with another species of this genue and some pics:

http://www.mapress.com/zootaxa.....86p254.pdf

http://www.mapress.com/zootaxa.....86p102.pdf

http://www.google.ru/url?sa=t&.....38;cad=rjt

My guys look like these ones: http://forums.loaches.com/view.....8;start=30

Similar yellowish background, size, the same locality as rosy loach, schistura behaviour and other similar features. However, I see my fishes are more round headed than long-faced Physoshistures in these papers. Moreover, their barbels have another position... I do not know but my fishes may actually prove to be Physoshistura.

July 19, 2013
10:37 am
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BigTom
Edinburgh
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Lovely looking fish Olly - shame you only got males.

Do they 'hover' in midwater like the rosies?

July 19, 2013
10:53 am
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torso
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Hi Olly

I can send you a pic if I have your e-mail

Cheers Charles

July 22, 2013
11:22 am
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olly
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BigTom said
Lovely looking fish Olly - shame you only got males.

Do they 'hover' in midwater like the rosies?

Thanks.

These loaches hover in the water in style of rosy loaches. When they were together with rosies in a quarantine tank, and were pale without stripes, they were very similar and it seemed that they were the same species. However, when they settled down in the tank and became colored, they proved to be different species.
When these loaches adapted in the tank, they hovered a lot with rosy loaches in the midwater. Then they localized on the bottom, divided it into 3 parts, and began to chase all the fish from the bottom including rosy loaches, biting for bellies or tails. They have very pronounced reaction of persecution of moving objects, so they chase any fish near the bottom. They contact with each other: or quarrel and fight, or peacefully swim together a bit or sit side by side.physoschistura.jpgImage Enlarger

 

July 24, 2013
12:59 am
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olly
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Thanks, Charles

I sent e-mail to your PM

July 27, 2013
1:22 pm
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olly
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Hi Charles

Thank you very much for articles. You are right. This is physoschistura brunneana or physoschistura cf. brunneana. Habit is similar, including the shape of the head. The only difference I see is that my physoschistures have almost whole dark bars on the body, but physoschistura brunneana in the article has dark bars, separated by light strips from above. It appears to be intraspecies variability.

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