Answer:
i think these are the main ones that convey a sad tone,
"The boy saw that the old man was breathing, and he started to cry."
"-and now my fish bleeds again and there will be others."
Explanation:
I think the first one because it's literally showing that the old man had been hurt or something was wrong with him, and once the boy had seen the old man breathe he was happy-crying which means the old man was about to die, which is why it is pretty sad in that way.
But i also think the second quote because the old man is saying how the fish (does it stand for something or is it literally fish) bleeds again (conveying that it has happened before) and there will be others, saying "there will be others" could mean anything since i'm answering this with not a lot of context. it could mean there will be others that bleed, there will be others that get harmed by the shark, there will be others that face near-death or there will be other fish that will bleed as well.
sorry if this makes no sense, i tried with what i had
