Zebrafish Larvae (IMAGE) U.S. National Science Foundation Caption Small prey-like items elicit a quick response from zebrafish larvae, as excitatory brain cells fire. However, large visual stimulus covering the zebrafish's field of vision fires off inhibitory cells, and the zebrafish responds less to it. This mechanism allows the zebrafish to have a good hunting response to the appropriate visual cues, and not bite off more than it can chew. Credit Zina Deretsky, National Science Foundation Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.