Fungal diseases of fish have become increasingly important, over the past 20 years. The traditional ‘‘fungi’’ are comprised members from several different taxonomic kingdoms. An increasing number other environmental fungi being reported diseased fish, further testament to opportunistic nature many fungi. Active fungal agents living in waters cause infections juvenile and adult individuals popul...

UNLABELLED Since 2009, catfish farming in the southeastern United States has been severely impacted by a highly virulent and clonal population of Aeromonas hydrophila causing motile Aeromonas septicemia (MAS) in catfish. The possible origin of this newly emerged highly virulent A. hydrophila strain is unknown. In this study, we show using whole-genome sequencing and comparative genomics that A....

—Many effects of diseases on cultured fish are known; they are less clear in wild fish populations. Cultured fish represent captive populations that can be subjected to intense scrutiny with an increasing range of diverse and powerful tools. Disease represents a spectrum from acute mortality to rather benign or inconsequential syndromes, all sharing the common feature of a deviation from the no...

An episode of serial mortality occurred in a population wild-caught, aquarium-reared sharphead flyingfish Hirundichthys oxycephalus. ?Most diseased fish had ulcerative hemorrhagic lesions on the skin, especially head, and displayed multiple, fine, whitish nodules scattered internal organs, including kidney, spleen liver. ?Histopathological examination revealed to be granulomatous consisting epi...

One of the current problems in the field of coral disease research is that of tracking coral pathogens in the natural environment. A promising method to do this is by use of pathogen-specific molecular probes. However, this approach has been little used to date. We constructed, and validated in the laboratory, a fluorochrome-labeled molecular probe specific to Aurantimonas coralicida, the bacte...

Japanese seabass (Lateolabrax japonicus) is an important species of cultured marine fish with high economic value in China. Nevertheless, from May to November 2019, mass mortality among occurred Zhuhai City, Guangdong Province Approximately 0.2–0.5% was recorded daily, and the cumulative up 30% during this disease outbreak. In study, clinical signs pathological characteristics diseased were inv...