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Fish Tank Forum • View topic - Rainbowfish ID
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Rainbowfish ID

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Rainbowfish ID

Postby Graeme » Sun May 17, 2015 7:56 pm

I think my Dwarf Rainbowfish are Neon Dwarf Rainbowfish Melanotaenia Praecox based on the photo in the profile. I've got 9 in a group but only one has red tipped fins like the photo, the other 8 have yellow tipped fins. Is this a sexual dimorphism or an age thing or have I got 8 fish that are not Melanotaenia Praecox?

Rainbow Colours 01.JPG

Rainbow Colours 02.jpg

Rainbow Colours 03.jpg
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Re: Rainbowfish ID

Postby malakye » Mon May 18, 2015 3:26 pm

I bought a group of dwarf rainbow fish a few year back and out of the ten, 6 were red and 4 were yellow, I was told it was more than likely a poor breeding thing but I never found any difference with them and they stayed yellow, I actually quite liked the yellow colouring. So will be interested in finding out what you discover.
I was told by one that it could be a cross breeding with a boesemani rainbow that caused the yellow colouration.
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Re: Rainbowfish ID

Postby Graeme » Tue May 19, 2015 6:37 am

Bosemani genes might tend towards a more orangey hue as they grow. I'll keep my eye on them.
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Re: Rainbowfish ID

Postby Anita » Wed May 20, 2015 8:44 pm

They look like Dwarf Neon Rainbows, I've kept them a few times. The red ones are the males and the females have the yellowy fins.
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Re: Rainbowfish ID

Postby Graeme » Wed May 20, 2015 10:17 pm

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