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Osteochilus spp.
March 9, 2009
10:33 am
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Matt
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O. hasseltii?

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Cake or death?
March 14, 2009
6:48 pm
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Matt
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No-one? Well here's another one anyway. /happy.gif" style="vertical-align:middle" emoid="^_^" border="0" alt="happy.gif" /> Is this O. nashii?

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Cake or death?
March 15, 2009
4:18 pm
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mickthefish
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i'm not sure on the hasseli, but i'm pretty sure that is nashii, these are the fish that Andy is interested in.
i'll give him a bell to see what he thinks Matt.

mick

March 15, 2009
6:50 pm
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Matt
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Thanks Mick. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> I also have this pic of yours which I think is O. pentalineatus? How was this fish to keep?

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Cake or death?
March 15, 2009
7:33 pm
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mickthefish
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they aren't bad but the trouble with them is the period of acclimatisation, they are not a strong barb.
feeding is no problem.

mick

March 16, 2009
10:56 am
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David Marshall
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Hey Matt

When you are doing the fact sheet for hasseltii please mention that there are times when individuals of this specie can develop a nasty habit of attacking anything cyprinid that shares their aquarium.

Regards David

March 16, 2009
11:11 am
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Matt
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Ok I'll add that in David. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Do you know if this behaviour is more pronounced if the Osteochilus has had the opportunity to claim ownership of the tank?

Cake or death?
March 16, 2009
11:20 am
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mickthefish
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i would suspect they attack lookalikes mate, i've watched them in a tank at BAS and they were forever chasing each other.
i think your pic could be them but JJcould have found a better fish to get the shots.

mick

March 16, 2009
2:24 pm
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andy rushworth
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Hi Matt I agree that the fish in the second pic is O.nashii ! as for the top one being Hasselti , its quite possible , they are quite widespread throughout S.E .Asia and there are a good number of similar looking sp/s , as for temprement my own Hasselti /? are very placid and dont seem to bother either other fish ,or indeed their own kind ! , I also have some O.triporus in with them and they seem just as placid !

I dont doubt Davids observations , perhaps we have similar looking , but different Osteocheilus's , personally I found O.macrocephalus to be a bit feisty with each other BUT I wouldnt see it as too much of a problem !

March 16, 2009
6:15 pm
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David Marshall
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Hey

The first trio of hasseltii I had were 'first in' and they caused little trouble, both within their group and to other fish species that shared their aquarium. However here they were the only cyprinids.

The hasseltii I made the post about came to me when it arrived, at a local retail outlet, as a 'make up' in a box of 'bagged' Tiger barbs. In colour and looks it was exactly the same as the previous trio. Perhaps because it was the only resident of its kind, although last in to the aquarium, it turned out, to my surprise, to be 'pure evil' towards fellow cyprinids, of which there were a number, and caused havoc within a few days.

When moved in with a tank of various Synodontis species and Ctenopoma it continued to behave badly but these fish were 'tough cookies' so its attacks did little harm.

Matt I know all fish species can have the capability to 'turn rogue' (see my Aquarticles article on the Bruin Skreeber) but have never seen such excess bad behaviour in a medium-sized cyprinid (although both Spanner and Clown barbs can have their moments) so thought that it would be good to warn other people of the possibility hasseltii can have for trouble.

Regards David

March 16, 2009
9:37 pm
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Matt
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Great info chaps thanks a lot. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Andy I was under the impression that only O. hasseltii and O. jeruk have that orange flecking on the flanks thats why I posted the pic. Do some of the others have it too?

Edit: have added basic profiles for hasseltii and nashii but can't find enough info on pentalineatus for it to be worth making a profile just now. I'll continue with Rasbora and return to this genus later.

Cake or death?
April 5, 2009
4:00 pm
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andy rushworth
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Hi Matt, I'd have to say I'm not certain about the orange /red spotting , but I'd guess it would be quite a safe bet that others share this trait also , this sort of colouration seems to be notable on a number of Labeo's also .

May 27, 2011
7:47 am
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Matt
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I've had it pointed out to me that the Indian species should actually be listed under Osteochilichthys. Can anyone help with references and/or shed additional light? CAS and Fishbase still have them under Osteochilus...

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May 28, 2011
5:32 am
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retro_gk
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May 28, 2009
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QUOTE (Matt @ May 27 2011, 01:00 PM) < {POST_SNAPBACK}>
Can anyone help with references and/or shed additional light? CAS and Fishbase still have them under Osteochilus...

Hora SL, 1942. Notes on fishes in the Indian Museum XLII. On the systematic position of the Indian species in Scaphiodon Heckel. Rec. Indian Mus., 44: 1-14.

Karnasuta J, 1993. Systematic revision of the southeastern Asiatic fish genus Osteochilus with description of two new species and a new subspecies. Kasetsart University Fishery Research Bulletin No. 19: i-vi + 1-105.

Kottelat M, 1989. Zoogeography of the fishes from Indochinese inland waters with an annotated check-list. Bulletin Zoölogisch Museum, Universiteit van Amsterdam v. 12 (no. 1): 1-55.

May 28, 2011
4:52 pm
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The.Dark.One
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It looks like there are differences in the formation of the lips and mouth but as a general rule (according to Jayaram anyway) Osteochilichthys has barbels absent (exception is godavariensis) and Osteochilus has 2 pairs of well developed barbels.

Another reference:

Pethiyagoda, R. and M. Kottelat 1994.
Three new species of fishes of the genera Osteochilichthys (Cyprinidae), Travancoria (Balitoridae) and Horabagrus (Bagridae) from the Chalakudy River, Kerala, India.
Journal of South Asian Natural History v. 1 (no. 1): 97-116.

See my catfish images at http://www.scotcat.com/thedarkone/thedarkone.htm
June 2, 2011
1:13 am
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racoll
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This is an old thread, but I notice that the name Osteochilus hasseltii is still in use in the profile page.

Osteochilus hasseltii is a junior subjective synonym of O. vittatus, according to Tan & Kottelat (2009).

June 2, 2011
7:33 am
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Matt
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Thanks lads, brilliant. /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" /> So you're in agreement that we should list these under Osteochilichthys then?

Rupert, great to see you here and thanks for the tip-off! Will amend the profile later today.

Cake or death?
June 2, 2011
11:07 am
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racoll
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QUOTE ("Matt")
Rupert, great to see you here and thanks for the tip-off!

A pleasure!

QUOTE ("Matt")
So you're in agreement that we should list these under Osteochilichthys then?

Just O. nashii. According to CoF it is Osteochilichthys as reported by Pethiyagoda & Kottelat (1994). The later reference (Raju Thomas et al.) superseded that, but doesn't look like a critical evaluation.

Osteochilus vittatus should stay in Osteochilus

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