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Viral Nervous Necrosis (VNN) in
red snapper snapper,…
Viral Nervous Necrosis (VNN) in
red snapper 
Intro
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caused by red-spotted grouper nervous necrosis virus (RGNNV), from genus Betanodavirus (family: Nodaviridae)
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Special characteristics
Virus (Betanodavirus)
RNA 1 encodes viral replicase, RNA2 encodes teh capsid protein
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Contain two genetic segments, RNA1 and RNA2
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RGNNV
Distributed in various warm water fish (eg: grouper, red snapper)
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References
Zorriehzahra, M. J., Adel, M., Dadar, M., Ullah, S., & Ghasemi, M. (2019). Viral nervous necrosis (VNN) an emerging disease caused by Nodaviridae in aquatic hosts: Diagnosis, control and prevention: A review. In Iranian Journal of Fisheries Sciences (Vol. 18, Issue 1, pp. 30–47). Iranian Fisheries Research Organization. https://doi.org/10.22092/ijfs.2018.117849
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Doan, Q. K., Vandeputte, M., Chatain, B., Morin, T., & Allal, F. (2017). Viral encephalopathy and retinopathy in aquaculture: a review. In Journal of Fish Diseases (Vol. 40, Issue 5, pp. 717–742). Blackwell Publishing Ltd. https://doi.org/10.1111/jfd.1254