Term: rivulus: found in small streams of tropical America; often kept in aquariums; usually hermaphroditic
Candidate hypernym: physical entity: an entity that has physical existence → 1
Candidate hypernym: sweet calabash: West Indian passionflower with edible apple-sized fruit → 0
Candidate hypernym: tap wrench: a wrench for turning a tap to create an internal screw thread → 0
Candidate hypernym: exaction: act of demanding or levying by force or authority → 0
Candidate hypernym: currency: the metal or paper medium of exchange that is presently used → 0
Candidate hypernym: cannon: heavy gun fired from a tank → 0
Candidate hypernym: insurance broker: an agent who sells insurance → 0
Candidate hypernym: grand dragon: a high ranking person in the Ku Klux Klan → 0
Candidate hypernym: coal gas: gaseous mixture produced by distillation of bituminous coal and used for heating and lighting → 0
Candidate hypernym: amphiuma: aquatic eel-shaped salamander having two pairs of very small feet; of still muddy waters in the southern United States → 0
Candidate hypernym: caspase: any of a group of proteases that mediate apoptosis → 0