When viewed from underwater, their white bellies allow them to blend in with the sunlight, making them harder to spot by other creatures.

Unlike fish that use their tail fins, seahorses swim with their dorsal fins without swinging their bodies, allowing them to move smoothly through coral reefs and seaweed. Their small movements do not attract the attention of foreign enemies.

Goldfish do not have a stomach. Since they are unable to accumulate food, they are constantly feeding.

About 95-97% of their body is made up of water.

It is called “gaya” because it can be caught in large numbers.
*Hurly-burly is expressed as wai-wai-gaya-gaya in Japanese.