Admirable Fish

There is an admirable fish in my house.
This fish is just like the others, but around 2 months ago it started flipping upside down: a sure sign that it was dying.
Amazingly, it is still alive, even until now. Sometimes it stops moving completely and sinks to the bottom, but then it will suddenly filp up and then slowly fall down again. When my uncle came over, he said that the fish had a broken spine. He grabbed the bottle of fish food and sprinkled some of it on top of the fish, saying that it needed help to be able to eat.
I am awed by the fish, surprised that it is so strong and persistant. But sometimes I see its lifeless body at the bottom, unable to move except to flap its fins and rotate its eyeballs; I pity the fish. It would me so much easier to die, and to stop living to save itself the pain.
I did as my uncle said and tried to sprinkle the food on top of the fish. But the fish is at the bottom of the tank and the food floats on the surface. In the end the food gets washed away, out of reach of the fish's mouth. If one or two manages to sink, it always lands somewhere unbearbly close to the fish, but to far for the fish to it it. It lands on the fish's body, right in front of its mouth. I get frustrated, too. So close, and yet so far. I feel sick to the gut whenever I try to feed the fish. It's eyeballs rotate as it sees the food, but they are always out of reach.
So much easier to just die and end it all, then to live and continue.