Join Date: Jun 2013
Location: NE Ohio, United States
I've had six out of six otos die in my tanks in the last six months. Bought at different times, short ride home from a pet store, gently acclimated, kept in different tanks, ate and swam well for a few weeks/months, then one day - BAM - dead.
If you're certain it was an actual injury, I would guess that it would just exacerbate their natural tendency to die in captivity. Unfortunately, with these fish, I don't think there necessarily has to be anything else wrong with their conditions for them to just keel over.