Anguilliformity is a morphological pattern in fishes, named for and typified by the eels.
Anguilliform fish have a long, slender body, and travel by anguilliform motion.
The caudal fin is often emphasized, with the other fins reduced, absent, or fused with the caudal fin.
[1] Anguilliformity has evolved independently in many groups, including among others: This fish-related article is a stub.
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