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I am getting a planted tank set up. I have looked at getting tetras for the tank. When schooling it says groups of 6 or more on each type, rummy nose and cardinal. Does that mean 6+ of each type, or since they are both tetras, can you do just 6 or more total with both combined??
 

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With two species as different in coloration as rummy nose and cardinal tetras, I would make sure to get at least six of each type if you want both. How large is your tank? If it will only fit six fish, I would go with a single species.
 

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With two species as different in coloration as rummy nose and cardinal tetras, I would make sure to get at least six of each type if you want both. How large is your tank? If it will only fit six fish, I would go with a single species.
This is invaluable information when dealing with any sp. of schooling fish. Although you could probably get away with a school of cardinal/neon tetras together - not suggesting you do this though. Your fish would be much happier with 12+ of the same sp. starting out with any schooling fish. In my experience it helps them acclimate knowing they have plenty of buddies with them.
 
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