FIGURE 2.

Diagram of the arena set‐up for testing the effect of the number of doors on minnow performance. Each arena included a starting chamber (A) with a door that was lifted after the acclimation period and a small plastic plant used as a landmark (B) to indicate the reward chamber (F) (dashed red line shows direct path to reward) containing the accessible food reward (C). An additional Petri dish with bloodworm (D) was placed in the closed reward chamber (I) to control for visual and olfactory cues. In the two‐door maze, there were two open compartments (E and H), but the interior reward chamber was blocked with a mesh door in one and open in the other. Similarly, in the four‐door maze, there were four open compartments (E, G, H, L) but three contained blocked entrances to the reward chamber, and only one was open.