Create a humorous cartoon scene. It might depict a lighthearted interaction between a black cat with green eyes, making a comedic attempt to steal a fish from a South Asian man who is a street fish vendor. The man, dressed in a colorful outfit, has a surprised yet amused expression on his face. Include an urban setting with bustling activity in the background with people of diverse descents and genders. Use vibrant colors and exaggerated shapes to emphasize the humorous and jovial atmosphere.