Abstract
This opinion article questions the underlying causes of malformations observed in early developmental stages of zebrafish exposed to a range of chemicals. The research focuses on determining whether these developmental abnormalities arise due to the inherent sensitivity of zebrafish to chemical exposure or if they are related to the ubiquitous expression of certain genes within the zebrafish genome. By analysing different studies on zebrafish embryos to various chemical agents and analysing the resulting malformations, the study aims to differentiate between the effects of chemical sensitivity and the role of gene expression in developmental disruptions. Findings from this investigation will contribute to a deeper understanding of the mechanisms driving developmental toxicity in zebrafish, with implications for broader environmental and genetic research.