The moral could be about the importance of caution. In the story, the fish might have been foolish because it didn't consider the potential dangers around it. For example, it could have been easily caught by a predator due to its lack of wariness.
The main character is surely the foolish fish. Depending on the story, there could be other fish characters that interact with the foolish one. Maybe there's an older, wiser fish that tries to give advice but the foolish fish doesn't listen.
There were novels similar to God-Killing Foolish: Stubborn Foolish, Stupid Foolish, Stupid Foolish:
1." After I Devoted myself to Criticize the Supervisor, I Got a Baby." Author: Xiaolou Girl 1
2." Longevity Begins from the Forbidden Art," Author: Super Little Erha
The following is a detailed introduction of these novels:
1." After I Dedicate My Body to the Supervisor, I Have a Baby ": A court official under one person VS a delicate beauty who hides secrets
Feng Xiao 'er had married the most treacherous official of the current dynasty. She had been scheming step by step, but he had seen through her every step.
She was originally a top-notch assassin in Jianghu. For the sake of information, she served tea and water to the superintendent, massaging his shoulders and legs. She was pitiful and humble.
After gaining the eunuch's trust, she began to put her arms around the eunuch's shoulders and wanted to be good sisters with him.
One night, Xiao Qi pressed her against the corner of the wall and said evilly. " Woman, submit to our family. We will give you the power to be above everyone else."
"Don't mess around." She hammered his chest with her small hand.
He was even more disdainful. How could a eunuch take advantage of him?
In the end, she wanted to cry but no tears came out of her eyes.
2." Longevity begins with the extraction of forbidden techniques ": Reincarnated into a high-level martial arts world, Chen Xuan activates the forbidden technique system and obtains exemption from the price of the forbidden technique.
Faced with the cruel situation, he had to extract forbidden techniques and open the path of crushing forbidden techniques!
Permanently forbidden technique, Ten Times Longevity Burning Saber Technique. The power of each slash was multiplied by ten times. The ultimate move was a normal attack!
One-time use forbidden technique, Eight Gates, Ye Kai. Who could block this kick of Ye Kai!
As he smoked, Chen Xuan realized that there was no one else who could stand shoulder to shoulder with him. He was the only one in the world!
You can read these novels on Qidian Chinese Network.
In the 'foolish crow short story', it could be that the crow is foolish because it is too greedy. For example, it sees a shiny object that is actually a trap but still goes for it because it wants it so badly. It could also be that the crow is easily influenced by the words of other animals and doesn't think for itself, which leads to its downfall.
The fox was trapped in a well. The goat came by. The fox tricked the goat into thinking there was great water down there. The goat jumped in. Then the fox climbed on the goat's back and got out, leaving the goat trapped.
There is surely the foolish king himself. There might also be his advisors, who try to guide him but are often ignored. And perhaps there are some common people in the kingdom who are affected by the king's foolishness.
I don't know for sure since I haven't read it. But likely there is the foolish friend, and probably another friend or friends who are in some way connected to the foolish one. There might also be some other characters like people they meet during their adventures or misadventures.
It's possible that 'The Fish' is a short story. However, there are various literary forms it could potentially represent. Maybe it's part of a collection of short stories or an independent piece. More information would help determine for certain.
The moral might be not to be too trusting or naive. The donkey in the story was foolish enough to trust the lion, which is a natural predator. This shows that one should be cautious and not blindly trust those who may have ulterior motives.