Neurotoxicity of neem commercial formulation (Azadirachta indica A. Juss) in adult zebrafish (Danio rerio).

Highlights: [•] Zebrafish was exposed to 20 or 40μl/L of the neem extract. [•] 20μl/L neem reduced the frequency of runs. [•] Both concentrations increased the number of climbs to the surface. [•] Tremors were increased after the high neem concentration. [•] An increased anxiety was observed and no effects were observed in the learning/memory test. [ABSTRACT FROM AUTHOR]