This is the dataset that corresponds to preliminary biohybrid interaction experiments conducted with the Behavioral Observation & Biohybrid Interaction (BOBI) framework, featuring the LureBot. The directory contains: Trajectories of fish and/or robot agents for different scenarios (<filename>.dat). A robot index file (<filename>_ridx.dat) that corresponds to each trajectory file, that contains the robot's ID (starting from 0) in the experiment, or a negative ID in the case of fish-only experiments. A brief explanation of the directory's contents: [Open-loop dynamics] Circular trajectories Disc-shaped: 1-hour-long trajectories of the LureBot with a disc-shaped lure performing a circular trajectory while a single H. rhodostomus is in the tank. Biomimetic: 1-hour-long trajectories of the LureBot with a biomimetic lure performing a circular trajectory while a single H. rhodostomus is in the tank. [Open-loop dynamics] Eightfold rose trajectories Disc-shaped: 1-hour-long trajectories of the LureBot with a disc-shaped lure performing an eightfold rose trajectory while a single H. rhodostomus is in the tank. Biomimetic: 1-hour-long trajectories of the LureBot with a biomimetic lure performing an eightfold rose trajectory while a single H. rhodostomus is in the tank. [Closed-loop dynamics] Biomimetic Interaction Model trajectories single_agent: Fish: 1-hour-long trajectories of a single H. rhodostomus interacting with the wall alone. Biomimetic: 1-hour-long trajectories of a single robot following a biomimetic model. pair_agents: Fish-only: 1-hour-long trajectories of a pair of H. rhodostomus interacting with the wall and with each other. Disc-shaped: 1-hour-long trajectories of the LureBot with a disc-shaped lure biomimetically interacting with a single H. rhodostomus. Biomimetic: 1-hour-long trajectories of the LureBot with a biomimetic lure biomimetically interacting with a single H. rhodostomus. group5_agents: Fish-only: 1-hour-long trajectories of 5 H. rhodostomus interacting with the wall and with each other. Biomimetic: 1-hour-long trajectories of the LureBot with a biomimetic lure biomimetically interacting with 4 H. rhodostomus.