If you see a fish got choke with another fish in its mouth, the best response is do nothing if the fish is still able to breath. Otherwise, you have to do an emergency surgery to cut up the fish (YAK!) in its mouth to release the choke. Pulling the choked fish out of its mouth by force can kill both fish. I once have a Green Terror got choked with a small peacock in his mouth. I left them alone as the GT was still able to breath. The choked fish was in his mouth for 4 days until it decayed and the GT was able to spit it out.
As for not feeding the fish, I go away for 3 to 4 weeks each year without asking anyone to feed my fish. Not feeding the fish is better for water quality and if any fish dies, there will be hungry scavengers to clean it up. Mouthbrooder females and male plecos routinely starved for 3 to 4 weeks to incubate eggs so not feeding a few weeks is no big deal.
