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Oreichthys species i.d.
September 12, 2013
11:09 pm
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andreastjern
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These were labelled Oreichthys crenuchoides in the store (and by the Asian exporter) and I was told they were young specimens. Having researched a little, I'm quite sure they're not crenuchoides.

Because of the pattern of black spots, I think they are Oreichthys parvus. It's probably hard to tell from the photos, but the dorsal fins are red, especially in the males.

Oreichthys-003-web.jpgImage Enlarger

Oreichthys-019-web.jpgImage Enlarger

 

 

September 13, 2013
8:19 am
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Matt
Málaga, Spain
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Welcome to the site Andreas. :) Think I'd agree with O. parvus. What do you reckon @andy rushworth ?

Cake or death?
September 13, 2013
10:26 pm
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andreastjern
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Thanks, Matt. Great site.

September 13, 2013
11:49 pm
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andy rushworth
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Sure do  ,where did ya get them Andreas :) ? Parvus is the Thai Oreichthys and seems to be available at the moment  ,though they haven't come my way yet :(  ,really pretty little fish !

September 14, 2013
3:04 pm
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andreastjern
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OK, I'll consider them parvus then...

Bought them at a store in South-East Norway called Dahls Dyrerike. Great selection there. Can check who they bought them from if you're interested.

 

 

September 15, 2013
12:13 pm
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andy rushworth
Gr Manchester , England .
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Hi Andreas , a bit far for me :) they'll no doubt turn up eventually  but thanks anyway .

 

How many did you get ,and what observations have you made thus far ?

September 15, 2013
11:06 pm
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andreastjern
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I bought ten. They were very thin at first but they eat well and they have no objection to regular flakes. They also seem to enjoy protein-rich fare such as frozen Daphnia. I haven't tried any plant-based foods yet. For now they seem happy with a pH a little above neutral, but I read that their habitats include peat swamps as well as other environments so I guess I'll eventually try conditions a little more on the acidic side to induce spawning.

 

I said something about males and females earlier, but when I look at them again I'm not really quite sure about the sexing. They're still a little too young and thin to use the bellies as a sure sign.

My guess is that the individuals with a less distinct black tip to the dorsal fin are the females. They also seem to be slightly more golden around the head.

The ones with distinctly black fin tips seem to be doing most of the sparring with extended fins. But this could be simply a matter of changing colors when they become agitated... We'll see when the females start getting round bellies.

 

 

September 16, 2013
9:30 pm
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andy rushworth
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Hi Andreas , thanks for your observations ,I'd agree with the sparring with extended fins as being a male indicator ,females usually tend to be more docile as a rule ?

 

http://www.google.co.uk/imgres.....#038;ty=76

 

A couple of males in the wild Cool great looking fish ,it would be great to see yours in a month or two when fully conditioned !

September 16, 2013
10:27 pm
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andreastjern
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Yeah, thanks, great photo - looks like mine only much more yellow in the fins on the ones in the wild. I'll post another image in a while...

December 26, 2013
10:04 pm
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andreastjern
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oreichthys-female-251.jpgImage Enlarger

oreichthys-male-230-web.jpgImage Enlarger

My Oreichthys are showing some more color, and it seems I got the males and females mixed up earlier. It's now fairly obvious that the females are the ones with the black spot near the top of their dorsal fins. They generally have duller colors. The males have larger dorsal fins that are red with no black spot. The pelvic fins on the males get red when they are agitated, and they show some yellow on the head and on the caudal fin. They also have a stronger black spot or band on their anal fins than the females. 

These are nice little fish, but less colorful than some other Oreichthys that I've seen. I suppose they are parvus or a closely related species. If anyone has seen similar specimens I'd be interested to hear. Unfortunately I have no reliable location information.

 

December 26, 2013
10:08 pm
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andreastjern
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oreichthys-male-250-web-2.jpgImage Enlarger

One more image of a male.

December 27, 2013
9:01 pm
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andy rushworth
Gr Manchester , England .
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Hi Andreas , looking great ,thanks for posting ! I've thus far had no luck in obtaining any of these Cry but still on the lookout , I did however manage to obtain some Indian Oreichthys Cosuatus , which have settled in very nicely and are really beautiful ! have Parvus been on offer regularly or was it a chance encounter ?

December 28, 2013
9:24 pm
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andreastjern
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Thanks Andy, the shop I bought from ordered directly from an Asian exporter, and they were supposed to be O. crenuchoides. I haven't seen them anywhere else.

Any experience with breeding the cosuatis so far?

 

 

 

 

 

December 29, 2013
10:33 pm
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andy rushworth
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You did well there because O. crenuchoides are more available Smile not really had the Cosuatus too long so if they do they do Laugh there is plenty of Java Moss in their tank so ? they share a 36x15x15 with a group of Pethia Aurea which do spawn regularly as I see the males courting the plump females ! I seem to think Oreichthys group like to use leaves as a spawning site , so something like H.polysperma or the plastic equivalant might be a useful addition to their home ?

January 4, 2014
3:04 pm
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andy rushworth
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Hi Andreas 

I've spoken to Chaiwut Grudpan a Thai chap who knows Parvus very well and he has cofirmed that they are indeed Parvus and you are correct about the sex of them too :)

Yours Andy !

January 6, 2014
10:40 pm
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andreastjern
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Thanks a lot, Andy! That's settled, then. Great help.

January 7, 2014
6:03 pm
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Matt
Málaga, Spain
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Hi Andreas would it be ok to use your images for a species profile? We don't currently have one for O. parvus. :)

Cake or death?
April 19, 2014
4:05 pm
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andy rushworth
Gr Manchester , England .
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Hi Andreas and Matt , well I got lucky :) been waiting for Parvus for a while and I've just been and collected 20 from Pier Aquatics , they are small at  the moment and will take a bit of growing but that's the fun bit !

How are your doing and have you any little tips for me :) .

 

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