Zebrafish use in research has been increasing.

• A. True
• B. False
• C. Not sure
• D. Decreasing

Answer: (A)

Zebrafish use in research has been increasing because this model offers a practical blend of advantages that suit contemporary scientific needs. They develop rapidly and externally, with transparent embryos that let researchers watch development and disease processes in real time. They are small, inexpensive to maintain, produce large numbers of offspring, and are highly amenable to genetic manipulation, which makes them ideal for genetic studies and high-throughput screening. Plus, there is a growing body of community resources, standardized methods, and widely used tools that improve reproducibility and collaboration across labs. As a result, researchers across developmental biology, toxicology, neuroscience, and disease modeling are adopting zebrafish more frequently, reflecting a clear upward trend in their use. The alternatives—decreasing use or uncertainty—do not fit the observed trajectory in publications, funding, and laboratory adoption.