Xenentodon cancila with a bent tail

[Stunter2b]

Hello folks,

I've had these Xenentodon cancila for quit a while now I have 3 of them but now one of them has a strange shape, his body is not straight like it was before his tail is starting to bend upwards is this normal, does this mean she is female and getting ready to bread?

Here are a few pics.

 

[Stunter2b]

BUMP.....Anyone

 

[channarox]

might be an injury.
she still acts normal?

 

[Stunter2b]

yep still eating normal & swims fine...