| 白鳍豚 | bái qí tún | see 白 | |
| 背鳍 | bèi qí | dorsal fin | |
| 尾鳍 | wěi qí | tail or caudal fin | |
| 减摇鳍 | jiǎn yáo qí | fin stabilizer (in ships); anti-roll stabilizer | |
| 臀鳍 | tún qí | anal fin |
| 1 | Aregal angelfish attracts the eye with alternating bands of strikingcolor on its body and fins. | |
| 2 | And so, you know, illegal fishers, looking for sharks for their fin, are becoming increasingly bold. | |
| 3 | Sailboats have many different types of fixed keels, such as full keels (see photo) and fin keels. | |
| 4 | The Permian seas came to be dominated by bony fishes with fan-shaped fins and thick, heavy scales. | |
| 5 | Whereas large animals swim by pushing against water with their fins or limbs, this approach is ineffective at very small scales. |