Hi Arianna, there's a live stain probe from STEMCELL Technologies that stains for live neurons. It works on zebra fish too (although it can be used on mouse and human). It is a membrane-permeable fluorescent probe that can be washed off after live neuron detection, leaving you with unlabeled and viable cells for your downstream applications.

https://www.stemcell.com/products/neurofluor-neuo.html

 Er et al (2015) NeuO: a Fluorescent Chemical Probe for Live Neuron Labeling

Perfect! Thank you very much!

Hello,

for immunhistochemistry the panneuronal  antibody directed against NeuN (Neuronal Nuclei antigen) should work in fish. There is a lot of literature available about it.

Sincerely Yours

Stefan