Hmm,Shorter dorsal and ventral fin, along with pale color in comparison to males,could indicate female, which are more drab colored and thus seldom seen in fish stores.
Males are often more colorful /sell better.
Fair enough,Just pointing out the difference in color between male and female gourami.(pale color not always indicator of sickness with this species).
Have seen more than a few fish (many species) born with deformed spines that lived just as long as those from same hatch without deformities.
Once kept a A. Rivulatus with bent spine and most of tail missing for nearly four year's.
Prolonged inbreeding often result's in deformed fishes over time.
Fish could indeed be infected with Iridovirus that this species is prone to .
Time in quarantine or hospital tank will tell.
I wanted to post an update. It has been about to two months since I asked for feed back. The fish did not make it. The fish got weaker and the bent spine got worse until it could no longer move to eat.