My rummynose tetras heads aren't glowing that bright, what's wrong? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 5 Old 11-30-2011, 05:20 PM Thread Starter
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My rummynose tetras heads aren't glowing that bright, what's wrong?

I have four rummynose tetras (at least that's what they were sold as) but their heads just aren't bright red. I have done several water tests and a water change, and the water was fine. They don't seem sick and like to school together. One of their heads is red and the others are just kind of pink. Are they a different species or what? I'd appriciate comments and ideas.
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post #2 of 5 Old 11-30-2011, 08:53 PM
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There are three very similar looking species; two are in our profiles with photos [click the shaded names]: Hemigrammus bleheri [the Brilliant rummynose], Hemigrammus rhodostomus [the original rummy, now very rarely seen] and Petitella georgiae, the False Rummynose. The latter is quite distinctive from the first when you look carefully. In our profile of the first, there is a photo showing the differences between the three species.

However, if all fish came from the same group in the store tank, it is unlikely the species are mixed. In which case, the intensity of the red can pale due to stress. Water parameters, water conditions, bright light, or not sufficient numbers can all cause stress. This species is not very adaptable to conditions that don't suit it. The profiles mention the needs, so I won't repeat all that. But if you have any questions after reading the profiles, ask away.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 5 Old 11-30-2011, 09:41 PM
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How long have you had them?

I'm not sure 4 is enough, they absolutely exsist to be together...

You might consider adding 3-4 more to see if that will ease some stress?
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post #4 of 5 Old 11-30-2011, 09:51 PM
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I agree if you have tested the water with a reliable test and everything is good then I would add a few more. If you do not have any floating plants I would also try that. Good luck with them they are very pretty fish when they are all colored up.

Kindest Regards,
Amanda

Keeping fish its not a hobby it is a passion!

55 gallon, 44 gallon, one 20 gallon tank, three 10 gallon tanks, and a 2.5 gallon all with real plants.

I have MTS and there is no cure.

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post #5 of 5 Old 12-01-2011, 02:16 PM Thread Starter
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I've had them for about 2 weeks. I have the four of them, 6 cardinals, 6 corys, 2 fem. guppies, and 1 bristlenose pleco, so I'm only going to get 1 more, so it won't get too overcrowded.
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