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

If we compare them to humans, they play the same role as our noses.

The maximum is about 7 to 8 years. However, very few sardines live this long in the harsh natural world. Most are eaten by other creatures.

Spotted garden eel (Heteroconger hassi) are waiting for food with their faces out of the sand. By keeping their bodies facing the direction of the current, they can catch food efficiently.

It is said that they cannot distinguish colors.