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Paedocypris
June 23, 2008
5:21 pm
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Matt
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I´ve just finished reading the description paper for this genus that currently contains 2 species. Some of you might remember it featuring in the press a couple of years back as one of the species, Paedocypris progenetica is reckoned to be the smallest vertebrate in the world. Both this and Paedocypris micromegethes are found in blackwater streams in SouthEast Asia, more specifically Sumatra and Bintan Island (P. progenetica) and Borneo (P. micromegethes). They´re really cool little things with an interesting mode of reproduction but unfortunately both are threatened by habitat destruction.... /rolleyes.gif" style="vertical-align:middle" emoid=":rolleyes:" border="0" alt="rolleyes.gif" />

Here are a few pictures of the spawning of Paedocypris, taken from the German magazine Süsswasser. I´m getting the article translated so will update this thread when I have more info. Apparently they´ve been bred in Germany and Japan but I reckon they must be terrible to ship as they´re fully grown at around 8 or 9 mm:

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Cake or death?
June 24, 2008
11:48 am
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dunc
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They barely even look like fish /ohmy.gif" style="vertical-align:middle" emoid=":o" border="0" alt="ohmy.gif" /> What size are they in that pic d'yknow? Those photographs are excellent like, can't have been easy.

Fascinating little fish. Were they "naturally bred" or hormone-induced? Any ETA on this paper? /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

June 24, 2008
3:46 pm
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Matt
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No eta yet. I´ve just realised I wrote 80mm in the first post. I meant 8. /blush.gif" style="vertical-align:middle" emoid=":blush:" border="0" alt="blush.gif" /> Now edited. No hormones or anything involved I don´t think. They´re cool eh? Check out the funky pelvic fins...

Cake or death?
June 24, 2008
4:09 pm
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Malti
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8mm? wow they look like something out of alien /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

June 24, 2008
4:33 pm
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dunc
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Yer I was gonna say like, 8cm isn't really that small /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> 8mm however... bloooooody hell /ohmy.gif" style="vertical-align:middle" emoid=":o" border="0" alt="ohmy.gif" />

June 24, 2008
4:41 pm
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Matt
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Yeh the "Paedo" part of the genus name was chosen because they are paedomorphic fish ie. adults retain some juvenile characteristics. The fry must be minute....they look like tiny tadpoles! Dunc do you remeber the Danionella that Pete and Paul were breeding? They were the previous smallest freshwater species before these were discovered.

Cake or death?
June 24, 2008
4:59 pm
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Reva
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a fascinating world we might never have noticed....living jewels
where are their pectorals? /tongue.gif" style="vertical-align:middle" emoid=":p" border="0" alt="tongue.gif" />

June 24, 2008
6:22 pm
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Daspricey
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Aren't the micromegethes the second smallest fish in the world?

They sure are beautiful!

June 24, 2008
7:25 pm
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Matt
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Yup David! Both Paedocypris were described in the same paper and both smaller than Danionella.

Cake or death?
July 1, 2008
2:48 pm
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pablito
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QUOTE (Matt @ Jun 24 2008, 08:08 PM) < {POST_SNAPBACK}>
Yup David! Both Paedocypris were described in the same paper and both smaller than Danionella.

Paedocypris sp. came into the UK last year but unfortunately they deteriorated pretty soon after arrival and before we could hold of them. They will come in again I am sure and hopeully we c an have a dabble.
One piece of interesting information that we have discovered about these little cuties is that they don't take too kindly to being netted and moved. They need to be managed into transport bags submersed or they, apparently, die /sad.gif" style="vertical-align:middle" emoid=":(" border="0" alt="sad.gif" /> . This idiosyncracy would explain why they have never lasted long at UK wholesalers.

July 2, 2008
11:34 am
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Matt
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Little fish like this must are so delicate they must be a nightmare to ship. Have you ever kept Danionella Pablito? I know there's at least one lot in the UK at the moment... By the way who are the mysterious "we"? /tongue.gif" style="vertical-align:middle" emoid=":p" border="0" alt="tongue.gif" /> Gizza shout in the welcome forum up there and introduce yourself! /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

Cake or death?
July 6, 2008
10:34 am
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pablito
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QUOTE (Matt @ Jul 2 2008, 12:17 PM) < {POST_SNAPBACK}>
Little fish like this must are so delicate they must be a nightmare to ship. Have you ever kept Danionella Pablito? I know there's at least one lot in the UK at the moment... By the way who are the mysterious "we"? /tongue.gif" style="vertical-align:middle" emoid=":p" border="0" alt="tongue.gif" /> Gizza shout in the welcome forum up there and introduce yourself! /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

Everyone knows Pablito, Matt. He has friends at Barcelona Aquarium! /wink.gif" style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />

July 6, 2008
12:47 pm
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Matt
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Bloody undercover fish geeks...../tongue.gif" style="vertical-align:middle" emoid=":p" border="0" alt="tongue.gif" /> Now I know who you are.... Would I be right in saying your colleague is known as "El Mariachi" in these parts? /ph34r.gif" style="vertical-align:middle" emoid=":ph34r:" border="0" alt="ph34r.gif" />

Cake or death?
July 6, 2008
3:21 pm
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Haji Badaruddin
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Pablito is correct ... to catch these fish ...... you can't use any net ...... They will die /sad.gif" style="vertical-align:middle" emoid=":(" border="0" alt="sad.gif" /> ....... The right way is to scoop them from the water. /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" />

July 7, 2008
8:32 am
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Matt
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Have you collected these then Haji? Any habitat info you can give us? /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

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July 7, 2008
11:33 am
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Haji Badaruddin
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I was told that its near ny house ie Matang area /happy.gif" style="vertical-align:middle" emoid="^_^" border="0" alt="happy.gif" /> .The place where i caught the brownorum last year.Yes i am thinking of catching some ....... the problem is when???This weekend maybe??? /unsure.gif" style="vertical-align:middle" emoid=":unsure:" border="0" alt="unsure.gif" />

Matang is a peaty area with dark tea color water.Part of the area is developed for residential purposes now.Was told by a friend that there's not many of these fish around now ..... Been told that they usually last abt 2 mths max in the aquarium. I'll let you guys know once i get some. /rolleyes.gif" style="vertical-align:middle" emoid=":rolleyes:" border="0" alt="rolleyes.gif" />

July 7, 2008
11:35 am
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Malti
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why only 2 mths? do they have a short life span or too delicate?

July 7, 2008
11:38 am
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Haji Badaruddin
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From the info that i get from the friend ...... these fishes are delicate ....... So far he told me his current stock abt 10 of them have lasted more than a mth.I cant really comment much on these fishes as i have yet to get one ...... But i am dying to get some pics of them.

July 7, 2008
11:40 am
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Malti
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you are lucky to have so many wild fish...we get only mosquito fish here, and in some secret spots a killifish which is illegal to keep

July 7, 2008
11:45 am
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Haji Badaruddin
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Ha ha ha /laugh.gif" style="vertical-align:middle" emoid="Laugh" border="0" alt="laugh.gif" /> ..... I heard abt the rare killifish story from Malta ...... Don't worry Malti ...... Next time you drop down here ..... i'll take you out for a wild betta spin /wink.gif" style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" /> /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

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