Assertion: butterfly fish's predator | /r/HasProperty | sensitive
Facets:
value: to movement
type: CAUSE
value: acutely
type: DEGREE
Source sentences:
text: Predators are acutely sensitive to movement, but a typical forest is a whirl of activity and they must quickly tune out the background motions of wind, water and all the non-food animals if they are not to be overwhelmed.