| NOUN | animal | heterocercal fin | a tail fin with unequal lobes in which the vertebral column turns upward into the larger / larger lobe as in sharks |
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| Meaning | A tail fin with unequal lobes in which the vertebral column turns upward into the larger / larger lobe as in sharks. | |
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| Broader | tail fin, caudal fin | The tail of fishes and some other aquatic vertebrates |
| Opposite | homocercal fin | symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes |
| Spanish | heterocerca | |
| Catalan | heterocerca | |
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