Sophie enjoys reading and playing soccer. A future career direction? She is "planning on taking science, engineering, and humanities courses in high school to assist my career decision."
Some marine animals generate a weak electrical field to sense prey, a phenomenon called electrolocation. Sophie wondered whether she could train an electrolocating fish known as the black ghost knifefish to navigate a maze using only this ability to guide itself.
Sophie conditioned a black ghost knifefish to swim through electricity-conducting metal rings. She conditioned another black ghost knifefish to swim through only non-conducting plastic hoops. She then had both fish swim through a dark underwater maze marked with metal rings. The fish trained to swim through the metal rings finished the maze in less than half the time it took the other fish.