Assertion: piranha's fin | /r/HasProperty | black
Facets:
value: at the base
type: LOCATION
value: usually
type: DEGREE
Source sentences:
text: Sometimes, blackish spots appear behind the gills and the anal fin is usually black at the base.
text: Sometimes, blackish spots appear behind the gills and the anal fin is usually black at the base.
text: Blackish spots are often apparent behind the gills, and the anal fin is usually black at the base, while the pectoral and pelvic fins vary from red to orange.