Feather Fin Rainbows

[Aienu]

I'm not sure which forum to place this in, so if you wish to move this to the appropriate place, feel free.

I recently acquired a number of feather fin rainbows and need some info on their living conditions for their tank and what parameters are needed for them to breed. Also, how to sex them? Any help would be great, thanks.

 

[FanOFish]

Can yo ugive more information? I've never heard of a feather fin rainbow?

 

[fisherman9844]

These guys are sometimes called Threadfin Rainbows. I've never seen one except in pictures but they certainly are spectacular. You can get a little more info at http/www.thetropicaltank.co.uk/Fishindx/iri-wern.htm and if you Google Threadfins or Iriatherina werneri there is a lot of info out there. I don't think breeding is terribly difficult but raising the fry may be another story. The fry are very, very tiny and will require specialized food (probably paramecium) that you most likely will need to raise yourself (easy from what I understand once you get the culture). I read on one site that the fry are ten days old before they can eat baby brine shrimp - that's tiny fry.

I am also in LA and would love to know where you got these guys?!

 

[EddieW]

I've got these - they are stunning especially when the males flare.

The males have the larger fin which is not always apparent unless they are flaring. When they do flare the top fin is shaped like an inverted U.

Eddie

 

[Lateral Line]

When the males "flare" they raise the anterior dorsal fin which normally lies flat, a large yellow-orange flag. Good to watch. My males would "flare" at other species as well, anything that was roughly the same shape as a female!

They breed fairly easily, but I found the females tended to die after spawning, (not all but a substantial number).

 

[ocs0809]

Hi all
I have about 20 Threadfin Rainbows at the start of my 3ft planted tank. But i observe that my threadfin rainbow are not really a comunity fish because when i add in 20 rummy nose, 50 carine tretra, 10 otto, 20 yamato ..etc in my planted tank, the threadfin rainbow does not open their fin anymore. Can i know why? Is it because the fish is in high stress due to other fish distrubance. Did you ppl experience that with your threadfin?
Another thing i observe is threadfin rainbow not really suitable for blood worm because their mouth is too small espically when they complete food with other fish. It is better feed them with with flakes.

 

[Lateral Line]

Maybe your figures are wrong somewhere, but if you really have that many fish in a 3 foot tank, you are not just overstocked, but absolutely massively so. If that is the case, I'm not suprised they've stopped showing interest in breeding - they'd be struggling to stay alive!

You want to run that passed us again!