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Ok i have now been looking at some sites and found many that keep rummynose and cardinal tetras with discus.
I don't understand why they keep them because they are good for only 25-27C.
When i asked if i can have black phantoms they said no...why....my phantoms can handle 28C.
I say if they can keep rummynose then iam sure i can keep black phantoms,correct me if iam wrong.

Robby

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I know human beings and fish can co-exist peacefully.

Robby,

That is a very interesting question and I don’t have an answer for you.

I just thought I share my opinion about it. I would say that Tetras are not Tetras are not Tetras. Even when just considering the Amazon region there are quite a few rivers/streams involved in which the individual species live. And these regions can show quite different waters (white water and black water, for example) with rather great differences in temperatures (for sure more than one degree).

I would say that any tetra that naturally lives in the same stream and area can be considered to handle the same conditions (duh, what a smarty-pants I am ). Any tetra that lives somewhere else but the conditions are the same would be feasible as well.

Now, all you have to do is dig around the web and find out exactly where rummies, cardinals, and black phantoms come from and you would know for sure if they fit.

Have fun,

Ingo

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Proud Member of the New Jersey Aquatic Gardeners Club

If you keep your Black Phantoms in 28C & they are Ok, than that's fine.
My Rummynose Tetra lived a 30C during the summer months.
How much will the Temperature be for the Discus?.



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Actually, Rummy Noses are known to prefer warm water. 24°C is usually cited as the minimum temperature that the species should be kept at for long term health, and usually nearer 27°C or 28°C. So long as the water is kept well oxygenated and filtered, they will live at temperatures of 32°C alongside Discus with no trouble. Liverpool Museum kept about 200 of them in a huge display aquarium with around 30 Discus at one time, and there were 200 Cardinals in there as well. They all seemed to get along very well indeed, if the size, colour and vitality of the fishes concerned was any indication ... but then they did have 1,000 gallons or more to swim around in!


Panda Catfish fan and keeper/breeder since Christmas 2002

My water will be 29-30C.
Ok then i will look for some rummynose tetras

Robby

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I know human beings and fish can co-exist peacefully.

Rummynose Tetra's are quite cute & they school together nearly all the time. I have 18 of them & their colour is very beautiful.


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Member of the Malta Aquarist Society - 1970.
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It all works until a discus gets sick and needs temps in the mid 80's to recover.....

I've read that, while a large majority of tetras do get along fine in Discus-temperature water, it's considerably too warm for either Black or Red Phantoms (or for Flame -- aka Von Rio -- Tetras).

Many times the question of temperature is a matter of acceptable vs. preferable. A fish can often go warmer than the oft-posted limits, but it may be less likely to breed, more e to disease, etc. On the other hand, once acclimated to a slightly higher temperature, they can often be fine for a long and healthy life...

Gary