Tetra Shoaling

BadBadger

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I've got a group of rummynose tetra, and was wondering what would happen if i added a group of cardinals. Would they all shoal together or would there be two seperate shoals?

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KittyKat

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Unless the tank is quite small, or the groups are particularly small, they will spend most of the time minding their own business and not mixing much, in my experience.
 
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BadBadger

BadBadger

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The tanks 180l and i was thinking 20 of each. Would prefer them not to shoal together. I might just stick with the rummy's and add another 20 of them.

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KittyKat

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I think that they would mix in a tank that size. :good: for getting such large schools!
 
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BadBadger

BadBadger

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I'll stick with the rummy's then i reckon. i think 40 sounds like a good number. or maybe more :eek: ?

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KittyKat

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I like to have 25-30 schoolers in a 3 ft tank (200 litres), 30-40 in a 4 ft, 50-60 in a 5 ft, etc.

Get whatever you think looks best, you are already over all the minimums I have seen, at 20.
 

Caprichoso

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In my 30g, all I had were rummy and cardinals. Sometimes they school together and sometimes not. When they did school together, they were still beside their own kin, example: all the cardinals would follow behind the rummy's and vice versa. It looked really nice. Plus, cardinals add so much colour to a tank!
 

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