Sexing

[newfishaddict]

Hi, I bought four of these fish, Inlecypris atropurpureus. I have also heard them called tiger rasboras. They were in my 21g for 5weeks and seemed a bit cramped; they move very very fast. I have moved them into my new 55g with a very strong current and they seem very happy; catching them was very difficult but now I feel I can catch anything. I had to remove all my plants and decorations to catch them...

There is very little info on them, anyone know anything about them? I have posted regarding them before but had no response, they must be rare......I would like to know anything about them but I really want to sex these fish, one seems to have a fatter more distended belly, and perhaps it is the female? They have both developed a white "bulge" on the front of their bottom jaw, I read that some rasboras will develop this when mature and/or ready to mate, any comments?

Aside: are golden plecos very rare too? I bought one that the person at the store said would not exceed 3 inches in total length, is this true?

Thanks

 

[KerriPaul]

Female inles are deeper bodied and larger , they are closely related to danios and could be considered as danionins

Hi, I bought four of these fish, Inlecypris atropurpureus. I have also heard them called tiger rasboras. They were in my 21g for 5weeks and seemed a bit cramped; they move very very fast. I have moved them into my new 55g with a very strong current and they seem very happy; catching them was very difficult but now I feel I can catch anything. I had to remove all my plants and decorations to catch them...

There is very little info on them, anyone know anything about them? I have posted regarding them before but had no response, they must be rare......I would like to know anything about them but I really want to sex these fish, one seems to have a fatter more distended belly, and perhaps it is the female? They have both developed a white "bulge" on the front of their bottom jaw, I read that some rasboras will develop this when mature and/or ready to mate, any comments?

Aside: are golden plecos very rare too? I bought one that the person at the store said would not exceed 3 inches in total length, is this true?

Thanks

 

[The-Wolf]

Female inles are deeper bodied and larger , they are closely related to danios and could be considered as danionins

As paul has said females tend to be more rotund in comparrison to males.

Paul
In 2003 Fang Fang classed Inlecypris, along with chela as part of the
clade sister group of Devario

Citation: Fang, F., 2003. Phylogenetic analysis of the Asian cyprinid genus Danio (telesotei, Cyprinidae).. Copeia (4):714-728. Page: 719
http/apt.allenpress.com/aptonline/?reque...ue=04&page=0714

I'm sure the scientific community will soon start refering to this fish as devario auropurpurea

 

[Lateral Line]

I believe one reason why it is difficult to get info on these, and other fairly recent imports from Burma, is the governing regime in Burma has not been very tolerant of scientific expeditions to the country. The result is that a number of fish have come to the market and are being sold, but because in some cases the fish have not even been formely described, the naming is highly variable.

The fish you specifically ask about aren't particulaly rare in the trade at the moment, I've seen them in several shops even here, where the lfs quality is not terribly high. What I have seen though, is many of these shops have made up a name for them on the spot!

You say you have seen them called "Tiger Rasboras", another thread a short while ago concerning the same fish was about "Purple Mountain Trout", whilst others use the "Lake Inle Rasbora" or the "Lake Inle Danio". Searching thus turns up few, if any hits. Similarly, the Linnaen name is still subject to much discussion.

As for sexing, with most Cyprinids, the females are deeper in the body, and wider when viewed from above or the front. They also tend to grow a little larger, and frequently show less colour and distinct markings.

Many Rasbora species do develop one, or a pair of white protrusions on the lip once mature.

 

[KerriPaul]

Wolf, htank you for this reference, any idea where you can get hold of the full paper?

I'm sure the scientific community will soon start refering to this fish as devario auropurpurea

I suspect it is more likely that we will have chela purpurea along with chela malabaricus, chela devario etc..

Fascinating that the true danios are more closely related to the flying barbs than the devarios

 

[The-Wolf]

I've tried to find the full article, without success.
I think the only place would be the British libary(sp)
in London and look at a copy of the published paper.
other than that perhaps emailing Fang Fang herself will shed some light on the matter.

 

[newfishaddict]

I've tried to find the full article, without success.
I think the only place would be the British libary(sp)
in London and look at a copy of the published paper.
other than that perhaps emailing Fang Fang herself will shed some light on the matter.

Thanks for all the replies! These fish are very jumpy and very easy to scare! When I turn lights on or off especially....I do try to adjust lights slowly so as to not shock them but they are still very jumpy and easily scared. I speculate that these fish are from the wild because of their temperaments. I have seen one become so scared when I turned on the lights( and I did approach the tank slowly and turn on a dim light first) that it just lodged itself within some plants and appeared dead! but when I looked at him thru the glass he wiggled free of the plants and then swam around apparently fine, is this unusual? Can anyone give me some pointers on how to deal with these "skittish" fish? They are in a 55g with lots of current and swimming space....