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Liniparhomaloptera disparis
August 20, 2010
3:31 pm
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Matt
Málaga, Spain
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Is this species more of a micropredator or an algal/biofilm grazer? Pic by HW Choy.

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Cake or death?
August 20, 2010
10:37 pm
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Plaamoo
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Mine seemed to be a bit of both. They liked BGA! Also hunted the bottom for food bits with the botias, though they were far less efficient. I really like them! All gone and unfortunately haven't seen them since that one time. "Hongkong Plecos"
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histidisparis.jpgImage Enlarger

August 21, 2010
10:06 am
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Matt
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Cheers Jim! Did they actually eat the BGA?

Also, are they capable of changing their body colour depending on circumstances?

Cake or death?
August 21, 2010
6:38 pm
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Plaamoo
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It's difficult to tell what they are actually eating Matt. There was only bits of BGA where the substrate met the glass and when I would vauum and move it around, they be there munching! And the BGA would disappear!
I don't remember much color change??? It's been a while. I think Mick has some.

I just dug this up. I only had the 2 at this point. They never really fattened up. I should have given them another tank.

August 21, 2010
11:37 pm
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Matt
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Was watching that video yesterday. /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> Thanks for the info a profile will duly be added!

P.s. unsure if Mick is even keeping fishes still. Miss having him around the place.

Cake or death?
August 22, 2010
4:30 am
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Plaamoo
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^^I think we all miss Mick! Hope he finds his way back.

April 21, 2011
11:32 pm
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Plaamoo
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"Hong Kong Plecos" turned up in my LFS today! Don't know where I'm going to put them, but had to have a few!
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April 22, 2011
12:22 am
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mikev
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I'm really really envious.... I love this fish....

(And to the best of my understanding it is not L.disparis but rather a Vanmanenia sp.... not that it matters)

April 22, 2011
12:53 am
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Plaamoo
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^There are more, want me to send you some /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

April 22, 2011
1:29 am
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mikev
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Actually I do.... I know this is a lot to ask but this is about one of my most favorite loaches Embarassed
I'll find something nice for you...have space for more bows?

How many are there and how much are they? : /wub.gif" style="vertical-align:middle" emoid=":wub:" border="0" alt="wub.gif" />

April 22, 2011
1:32 am
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mikev
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also... the red version from the first photo is something I've always wondered about.... I'm not sure it is the same species. I've seen them twice, unfortunately the entire shipment went Kaput both times, but the feeling I had was that it was not identical.

April 22, 2011
2:31 am
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Plaamoo
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You & Matt & Thomas & ??? can debate the species issue.

Email or pm me and we can discuss it further. I don't know how many there are left, I'll check tomorrow?

April 22, 2011
8:11 am
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Matt
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Nice find Jim, they look very cute!

QUOTE (mikev @ Apr 22 2011, 01:05 AM) < {POST_SNAPBACK}>
(And to the best of my understanding it is not L.disparis but rather a Vanmanenia sp.... not that it matters)

Any reference for this Mike? Would love to read it. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

QUOTE
also... the red version from the first photo is something I've always wondered about.... I'm not sure it is the same species.

...as the other fish shown in the photos here in this thread?

Cake or death?
April 23, 2011
5:40 am
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mikev
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No ref, I'd love to have it too.

A few years ago when I kept some (it was my first hillstream), I tried to figure out what is going on... The fish came from HK, as "HK pleco" with not-at-all-scientific name H.hoffmani; not always the same fish either. JP from LOL did not believe this being Lh.disparis based on the head shape, but head shape seemed to be variable, and so was the pattern.

One of the variants of this HK fish is shown here: look at the first photo. This is no V.hainanensis obviously; the pattern is different (and matches HK vannies) plus this photo predates exports from Hainan (which was a closed military zone till recently).

So I started digging up everything I could find on mainland China vannies... many described species but little info to go by ... and this being done around 2006 I will have hard time re-finding what I found then.

My feeling is that there are several species of Vanmanenia from that area, possibly not all described, and quite possibly Lh.disparis is in reality one of the Vannie species. Cannot do any better then this, sorry, this is the usual hillstream mess, and asaik nobody even looks at Vannies today, unlike, say, Sewellia.

BTW, HK area also has what seems to be a mainland analogue of Crossostoma... I had one for a couple of years, really nice hyperactive fish....

April 23, 2011
8:00 am
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andy rushworth
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Hi Jim ,sorry to change the conversation a bit but that young Histrionica has some lovely colour /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" /> how many you got ?

My group of Histrionica 8 were really yellow when young but as they grow they do seem to loose the colour a bit /blink.gif" style="vertical-align:middle" emoid=":blink:" border="0" alt="blink.gif" /> I've never had a group of Histie's grow uniform , always quite a variation with in the gang , does everyone see this ?

April 25, 2011
5:21 pm
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Matt
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Ok so the main external difference between Liniparhomaloptera and Vanmanenia spp. appears to be the absence of a rostral groove in the upper lip of the former vs. presence in the latter. Liniparhomaloptera also has scales on the ventral surface of the body, between the pectoral fins which are apparently lacking in Vanmanenia. There's some useful, albeit limited, information here.

Has anyone got a good, detailed shot of the mouth and area between the pectorals?

Cake or death?
April 25, 2011
8:17 pm
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Plaamoo
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QUOTE
Hi Jim ,sorry to change the conversation a bit but that young Histrionica has some lovely colour thumbs_up.gif how many you got ?

That's an old pic Andy. One of the same fish in my av. I have since added another to make 4. I don't remember that yellow coloring, been a while. Mine are all beautiful silver & black, and all three grew at similar rate. Much faster than the kubotai. The 4th has almost caught up to the others now and they seemt to have leveled off.

QUOTE
Has anyone got a good, detailed shot of the mouth and area between the pectorals?

I'll see what i can do Matt.

April 25, 2011
9:31 pm
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Plaamoo
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Here's a pretty good head shot. They don't spend much time on the front glass. I'll keep trying.
1_04-3.jpgImage Enlarger

April 25, 2011
9:49 pm
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Matt
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Such a nice-looking wee fish. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> It's the underside we need to see if you can though Jim.

Cake or death?
April 25, 2011
10:11 pm
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Plaamoo
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QUOTE (Matt @ Apr 25 2011, 02:32 PM) < {POST_SNAPBACK}>
Such a nice-looking wee fish. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> It's the underside we need to see if you can though Jim.

Yeah yeah I'm workin' on it. /mad.gif" style="vertical-align:middle" emoid=":mad:" border="0" alt="mad.gif" />

So the rostral groove is on the underside? have any pics to show that? I can't find anything. In Dr. Tan's book it shows the rostrum( basically the nose or snout right??) from above.

These fish come & go quicker than I can focus! Best I can do for now.
crop4.jpgImage Enlarger

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