Assertion: catfish's fin | /r/HasProperty | single lobe
Facets:
Source sentences:
text: The caudal fin is a single lobe, though heterocercal.
text: Blue catfish are included in a family with bullhead catfishes, and have many similar features as other members of this group, such as their lack of scales, their single dorsal fin followed by an adipose fin just before their tail fin, and their flat anal fin.