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Adding fish in the correct order

2K views 1 reply 2 participants last post by  Lupin 
#1 ·
Is it ok to add different sizes of discus fish to my tank over a period of time or will that lead to strange or possibly agressive behavior?
 
#2 ·
I'd recommend adding the smallest one first. If all discus are of the same size and in healthy conditions, they can be added altogether.
 
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