Assertion: eel's fin | /r/AtLocation | the end of their tails
Facets:
Source sentences:
text: The Uropterygiinnae, on the other hand, are defined by both their dorsal and anal fin being located at the end of their tails.
text: The Uropterygiinnae, on the other hand, are defined by both their dorsal and anal fin being located at the end of their tails.