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Discussion Starter · #1 ·
I have 2 male blood sword tails, and they are picking at 12 of my rasboras occasionally, and frequently picking at my 1 dwarf gourami. i added a bunch of plants and made one corner very dense with plants, the gourami is fine now. but i'm worrying about the harlequin rasboras.
Ammonia 0
nitrate under 20
ph 7-7.5
40 gallon tank
 

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As you found out swords can be aggressive toward some fish.

If you have only had the swords a short period of time, let it got for now, and they may calm down and work out well. If they don't, the options are removing them or adding about 4 female swords for them to chase around.
 
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