Figure 4. Learning curves of Experiment 2: the lines show the percentage of correct choices for each archerfish in a 2 vs 3 training.

Learning criterion (blue dotted line) was reached after two consecutive sessions ≥75%. The red dotted line refers to chance level.

Figure 4—figure supplement 1. Performance data for each non-numerical control condition at training in Experiment 2.

Type of choices 0 and 1 corresponds to uncorrect and correct choices, respectively (training data refer to the last two training sessions, when learning criterion was reached).