Can a Japanese mermaid and a koi fish be displayed together?

Yes, a Japanese mermaid and a koi fish can be displayed together in an artistic or thematic setting, as both are significant elements of Japanese folklore and culture. The mermaid, often depicted as a beautiful creature with a human upper body and fish tail, complements the graceful koi fish, which symbolizes perseverance and strength. In a visual art piece, they could represent harmony between human and aquatic life. However, in a literal sense, mermaids are mythical beings and do not exist in reality.