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Emperor tetras chasing

1K views 1 reply 2 participants last post by  fishbreeder 
#1 ·
Is it normal for emperor tetras to chase each other? Like 2 of the 6 I have are never separated they swim all over the tank really fast and it looks mean but theres no torn fins or any kind of marks. They all are pretty goofy so I dont think much into it but is it normal?
 
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