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The True Eels, Order Anguilliformes, lack pelvic fins and related skeletal material. Some are also without pectoral finnage and suspensory girdle. Many are scale-less, those with them are cycloid, small, embedded. These "snake-like" fishes (many head-lengths into body length) typically have small gill openings, and their gills lack the rakers of advanced bony fishes. The group is missing a number of head bones, pyloric caeca, and have a peculiar leptocephalus larval stage in common. According to Nelson (3d ed.) there are some three suborders, fifteen families, 141 genera and 738 described species of true eels.
What's in a name? A bunch of Non-Eels though called them:
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