Flagtail Prochilodus, red fin and yellow fin

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From YT:

bonytang flagtail prochilodus one of my fav fish. such a great tankmate

Fish-Story Not IME. Usually causes one problem or another. Sometimes stays trouble free with proper mates.

bonytang I've only kept flagtail with more dominant species, so have never seen aggression. i think every arowana i've kept was paired with one. honestly i can't even remember a time they would even fight another flagtail.. interesting to hear they are trouble makers but i'm sure they would have a different personality if they were the top dog. i even raised maybe 6 at the same time but all sold before 8".. adult attitudes will eventually kick in probably. awesome fish though

Fish-Story Nice. Good to learn more details. In my statement I meant both giving and receiving stress and aggression. All significant learnings with our flagtails have been reported in our thread on them (this thread).
 
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