November is ending and in this period of late autumn people often have difficulties finding activities to keep them occupied. Rainfall and cold force us to stay at home and without inside activities, we can easily get bored. And what about zebrafish in their tank? Can they also get bored?  This article of the month aims to highlight the importance and impacts of enrichment in fish tanks on zebrafish boredom, anxiety and cognition. Enrichments are also part of the 3R’s (Replacement, Reduction and Refinement) principles.  3R's principles Natural environment of…