The fish early-life stage (FELS) test (Organisation for Economic Co-operation and Development [OECD] test guideline 210) is the primary test used internationally to estimate chronic fish toxicity in support of ecological risk assessments and chemical management programs.
Investigating Alternatives to the Fish Early-Life Stage Test: A Strategy for Discovering and Annotating Adverse Outcome Pathways for Early Fish Development
Environmental Toxicology and Chemistry, 2014