Assertion: eel's fin | /r/HasProperty | bottom
Facets:
Source sentences:
text: dorsal fin starts well before the anal fin (bottom) which starts just after the anus (vent).
text: On the short finned eel the dorsal fin (top) starts just a little before the anal fin (bottom).
text: The longfin eel is so named because its top (dorsal) fin is longer than its bottom fin.