Two fish species, two strategies—a new model to study working memory

For over three decades, the zebrafish has advanced preclinical biomedical research: hundreds of individuals can be studied simultaneously, and even whole-brain activity can be recorded in living animals. Its limitation, however, lies in its social nature: as a schooling species, its behavior is always influenced by the presence—or absence—of conspecifics. This means that when studied in isolation, results may be skewed by its innate social tendencies.

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