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Oryzias melastigma
June 2, 2012
9:22 pm
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kim m
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Today I stumbled over some Oryzias labelled Oryzias melastigma in a shop. The were Oryzias for shure, but I stuggle to find any info on these. From the pics I can Google they could be ID'ed correct, but they need some feeding to show their potential...it's not a shop that is good at keeping fish alive for long.

I'll do some pics when they've been fattened up a bit.

I have experience with O. sp. Blue Neon (Wolosi, Sulawesi) and O. woworae and expect these to be sort of the same when it comes to maintainence but if not it would be good with some pointers :)

---------------------------- Best regards, Kim Kastberg
June 6, 2012
9:49 am
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Matt
Málaga, Spain
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Hi Kim, do they look like THIS maybe?

Cake or death?
June 6, 2012
12:41 pm
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oaken
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Were you supposed to attach a picture there, Matt?  Kiss

 

Got any pictures, Kim?

June 6, 2012
7:15 pm
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kim m
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Here's a couple of pics...they are looking better than when I first bought them but none have carried eggs yet.

There's a yellowish edge on the caudal fin. I'm not familiar with all the Oryzias species apart from the two blue ones available everywhere.

BTW Matt, I'll try to get myself together and do some blue neon and woworae pics soon! I know I've promised this for a long time...

Oryziasmelastigma1.JPGImage Enlarger

Oryziasmelastigma2.JPGImage Enlarger

---------------------------- Best regards, Kim Kastberg
June 7, 2012
8:58 am
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Matt
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Nope Gustav, we do need to change the colour of links on the forum though. Have edited post for now.

Kim, looks like O. javanicus?

Cake or death?
June 7, 2012
3:39 pm
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kim m
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Good suggestion Matt...I have a really hard time telling many of these Oryzias apart :) but from a quick Google-search it seems possible!

---------------------------- Best regards, Kim Kastberg
June 8, 2012
1:35 am
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mikev
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FWIW: Here is a listing for the species, with a photo..

I know the breeder and thus reasonably sure that his ID is correct... He likely can answer questions about the species.

 

The fish does look pretty...

June 8, 2012
8:18 am
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Matt
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I think Kim's fish are different to the ones in the link? Look at the fin patterning?

Roberts (1998) discovered that the type series of O. melastigma is comprised mostly or entirely of Aplocheilus panchax and considered the name invalid. This has been followed by recent authors such as Parenti (2008) but not by online databanks such as CAS for some reason. I do have papers if anyone's interested?

Cake or death?
June 8, 2012
5:39 pm
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mikev
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Another confusion to resolve...

Notice that the breeder's description has " The female carries her eggs hanging from her vent like a bunch of grapes. " which is the typical Oryzias... do you know how Aplocheilus reproduce?

June 12, 2012
8:12 am
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Matt
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Not sure I follow the question Mike? The fish in both Kim's pic and the link you posted are both Oryzias spp.

Think Aplocheilus breed in fairly 'standard' killi fashion, i.e., eggs are deposited within a suitable medium?

Cake or death?
June 12, 2012
6:44 pm
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mikev
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Trying to understand the implications of Roberts.... is there such thing as O. melastigma ? Or both posted photos are different Oryzias and neither is melastigma and it is not clear what they are?

(as for eggs... with oryzias, I think all species, the females carry a string of eggs before attaching them to medium... I don't think Aplocheilus do this... so this perhaps may be a way to confirm that the link I posted shows an Oryzias indeed?)

June 12, 2012
8:38 pm
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kim m
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Aplocheilus does indeed breed like other killies and not as Oryzias. I've bred a few Aplocheilus also.

Whatever Oryzias sp. my fish are, they are breeding. Found 5 eggs in the mop today :)

I am awaiting eggs of 4 different species from a guy in Germany who seem to have a clue about Oryzias so if/when i am so lucky to raise them I will have something to hold them against.

---------------------------- Best regards, Kim Kastberg
June 13, 2012
8:14 am
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Matt
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Nice one Kim.Smile

Mike, there is such a name as O. melastigma but it's considered invalid as the description appears to have been based on juvenile specimens of Aplocheilus. The species in the link you posted is O. dancena by current reckoning as it's the only one with white margins in the fins. That make more sense?

Cake or death?
June 13, 2012
6:07 pm
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mikev
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Thanks, Matt, I'll let him know. 😀

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