Fish Early Life Stage Toxicity (OECD 210)
Freshwater Fish - Early Life Stage Toxicity (FELST) - OECD 210
The preferred freshwater species are rainbow trout (Oncorhynchus mykiss) or carp (Cyprinus carpio).
The early life stages of fish are exposed to the chemical usually under flow-through conditions. The study starts by placing fertilised eggs in a series of replicate test chambers and continues until all the fish are free-swimming and feeding exogenously. Lethal and sub-lethal effects such as growth and development are assessed and compared with un-exposed control replicates. The larval and early fry stages are usually the most sensitive stages to the effects of xenobiotics.