Description:The right optic nerve of 1 year old female and male Danio rerio were crushed and collected three days after. Matching controls of uninjured eyes were also collected. The tissue was dissected from euthanized fish and “flash” frozen on dry ice in Eppendorf tubes. Due to the small size of the nerves, for each category (female crush, female control, male crush, male control) n=24 the samples were pooled. The brain from one male fish was also collected for control/calibration. Lipid extraction was done with the Bligh and Dyer [2] method, followed by untargeted liquid chromatography-mass spectrometry (LC MS-MS) lipid profiling using a Q-Exactive Orbitrap instrument coupled with Vanquish Horizon Binary UHPLC LC-MS system. The lipids were identified and quantified with LipidSearch 4.2.21 and the statistical analysis was conducted through Metaboanalyst 5.0.