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Osteochilus spp.

Home Forums Fresh and Brackish Water Fishes Osteochilus spp.

This topic contains 11 replies, has 4 voices, and was last updated by  racoll 7 years, 3 months ago.

Viewing 15 posts - 1 through 15 (of 18 total)
  • Author
    Posts
  • #300077

    Matt
    Keymaster

    O. hasseltii?

    Attached files

    #312930

    Matt
    Keymaster

    No-one? Well here’s another one anyway.

    Attached files

    #312944

    mickthefish
    Participant

    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

    #312947

    Matt
    Keymaster

    Thanks Mick.

    Attached files

    #312948

    mickthefish
    Participant

    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

    #312959

    David Marshall
    Participant

    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

    #312960

    Matt
    Keymaster

    Ok I’ll add that in David.

    #312961

    mickthefish
    Participant

    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

    #312965

    andy rushworth
    Participant

    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 !

    #312969

    David Marshall
    Participant

    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

    #312973

    Matt
    Keymaster

    Great info chaps thanks a lot.

    #313250

    andy rushworth
    Participant

    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 .

    #343670

    Matt
    Keymaster

    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

    #343699

    retro_gk
    Participant

    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 Zo├Âlogisch Museum, Universiteit van Amsterdam v. 12 (no. 1): 1-55.

    #343708

    The.Dark.One
    Member

    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.

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