Assertion: brook trout's fin | /r/HasProperty | followed by black
Facets:
value: usually
type: DEGREE
Source sentences:
text: Caudal fin square or nearly so; dorsal and caudal fins with distinct, dark, wavy lines or blotches; lower fins with pure white leading edges usually followed by black; back usually with wavy lines (vermiculations); sides with pink or red spots, many of which have blue borders; young with 8-10 regularly arranged parr marks on sides.