noun
dusky tripletooth goby
A species of goby (Tridentiger obscurus) found in brackish and coastal waters of Japan. Common name in Japanese is チチブ.
河口でチチブを釣った。
I caught a dusky tripletooth goby at the river mouth.
The origin of the name チチブ is uncertain; it may be related to the place name 秩父 (Chichibu), but the connection is unclear.