Variants of perch rhabdovirus (PRV) circulate across European percid farms via the fish trade. To trace their circulation, they are usually isolated by cell culture and subsequently identified genetically by sequencing partial or complete genes. Here, a newly developed nested PCR‐based method was used to amplify and sequence the complete N and P genes directly from clinical samples obtained during an outbreak on a farm as well...

The koi sleepy disease of carp caused by the carp oedema virus (CEV) was observed on farms and in ponds in France since the 2010s. Samples of CEV collected in France over a period of eight years were characterized at the molecular level by sequencing the partial p4a gene. All the sequences, except one, fell into two well‐defined genogroups. Sequences obtained from CEV detected in common carp generally clustered in genogroup I...

A group of pathogenic nucleocytoplasmic large DNA viruses (NCLDVs) related to the Mimiviridae family infect farmed sturgeons across Europe, causing mild‐to‐severe losses. One of these viruses, Acipenser iridovirus‐European (AcIV‐E), was identified in six sturgeon species. During the 2018–2019 period, nine sick Siberian ( A. baerii ) and Russian ( A. gueldenstaedtii ) sturgeons were sampled in Ukrainian farms and tested for the...