Nice catch!
The big thing here is the OP too the criticism well, and learned from his mistakes. It happens. As long as it's not intentional, and a continued behavior, I have no issues with this picture.
I've been fishing my whole life and I had a good fish flop on me today, I lost my grip with one hand and caught it in an akward position near the gills. It sucks, but it does happen. The fish swam away as if it was never caught, and I hope I did no damage.
Anyhow, learn and apply what you learned next time (as it looks like you did).