Flagtail prochilodus

[burntrubber]

Not long after this post, I went and got a 2 inch Flagtail. It went into my 100g planted tank where it played nice for a couple of months, then it started beating on my bosemani rainbows. By then it had grown an inch. Then I switched it up to the 220g with the big guys. Same thing played out and it's attacking my Marbled Headstanders. Now it's going into a small pond in my mum's garden with platies and nothing else. Lesson learnt. Flag tails do not go with similar shaped fish or related species of fish.

 

[Cfremont23]

Yes I believe that is a pretty big flaw with them that they can't be with fish that look the same in color or shape

 

[FJB]

Sorry your experience was not what you had hoped for with your flagtail.
But it has been very different from my experience with both fish I have had, the current one, and another, years ago. I guess it is very possible that individual fish exhibit different behaviours; it could a gender thing (not that one can tell gender in flagtails), or something else. I do know (from others) that having 2 or 3 together in a smallish tank is simply not possible. So it is either a single one, or many in a very large tank.
My current one (~10 inch) lives with fish of about 6+ inches (Hemiodus), and angel, some plecos, cories and penguin tetras. About a month ago I added 15 very small (young, less than 1 inch) lemmon tetras and everyone of them is still there and they are growing well. My experience is therefore, is quite different.
I hope your Prochi does well in the the pond. My expectation is that it will.