“Gadolinium Contrast Agents Affect Zebrafish Brain Activity at High Concentrations”

https://pubmed.ncbi.nlm.nih.gov/38114019

The study found that while gadolinium and its based contrast agent (GBCA) are not acutely toxic to early life stages of zebrafish, they can still cause significant changes in brain activity at high concentrations, highlighting the need to investigate long-term effects of GBCAs in the aquatic environment.