(Flash Wilson) wrote in
:

Hiya,

About a year ago I bought six of what I was told were baby
scissortail rasbora. I was told they would lose the blue colouring
and grow to need a larger tank.
Here they a http://www.gorge.org/fish/what.shtml#scis

Scissortails are not blue when young, so these are certainly not that
species. The pics aren't exactly perfect, but I think I see an adipose fin.
If it is there, those are most probably blue tetras, Boehlkea fredcochui.
Not among the most peaceful tetras but still suitable for many community
tanks.

And if your fish has that adipose, you might want to look for a shop with
more knowledge. The amount of fins is one of the most important things how
to tell fish groups apart from each others. Adipose fin can be found only
from few fish groups, like many catfishes, nearly all salmonids and nearly
all tetras.

Liisa