Figure 3
From: Domoic acid affects brain morphology and causes behavioral alterations in two fish species

Learning behavioral test. Response of the organisms after being exposed to DA-contaminated fed. Organisms exposed to the HC-diet (red tag) were transferred to the aquarium with fish exposed to LC-diet. Organisms exposed to the LC-diet (blue tag) were transferred to the aquarium with the HC-diet. HC-fish started to consume the LC-diet after two days of exposure and continue to reject the high DA content diet. In contrast, LC-fish consumed both diets but rejected the HC-diet on day 7.