Novel Tank Diving Test — Background
The novel tank diving test was developed as a high-throughput zebrafish anxiety assay by Levin et al. (2007) and further standardized by Egan et al. (2009). It exploits the natural diving response of zebrafish when introduced to unfamiliar environments. Over a typical 6-minute trial, healthy fish gradually explore upper zones as they habituate. The test is widely used for screening anxiolytic and anxiogenic compounds, genetic mutants, and environmental stressors. Key advantages over rodent assays include higher throughput, lower cost, and the ability to test both larval and adult fish.