Assertion: burbot's fin | /r/HasAspect | heavy black wavy lines
Facets:
Source sentences:
text: The fins of the brook trout are also distinct; the dorsal fin has heavy black wavy lines, the caudal fin has black lines, the anal, pelvic and pectoral fins have white edges followed by black and then reddish coloration (Scott and Crossman, 1985).