| NOUN | animal | caudal fin, tail fin | the tail of fishes and some other aquatic vertebrates |
|---|
| Meaning | The tail of fishes and some other aquatic vertebrates. | |
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| Synonym | tail fin | |
| Part of | fish | Any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills |
| Narrower | heterocercal fin | A tail fin with unequal lobes in which the vertebral column turns upward into the larger / larger lobe as in sharks |
| homocercal fin | symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes | |
| Broader | fin | organ of locomotion and balance in fishes and some other aquatic animals |
| Spanish | aleta caudal | |
| Catalan | aleta caudal | |
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