noun
Amur stickleback
A small freshwater fish (Pungitius sinensis) found in East Asia. The name is typically written in katakana.
トミヨは北海道の川でよく見られる。
The Amur stickleback is often seen in rivers in Hokkaido.
The origin of the name is uncertain; it may be a combination of 富 (wealth) and 魚 (fish), but this is speculative.