Changes

Also Known As: '''''Fin Rot — Tail Rot — Peduncle Disease — CWD — Rainbow Trout Fry Mortality Syndrome'''''

Also Known As: '''''Fin Rot — Tail Rot — Peduncle Disease — CWD — Rainbow Trout Fry Mortality Syndrome'''''

Most fishes worldwide are susceptible and the organism is '''ubiquitous.'''

Most fishes worldwide are susceptible and the organism is '''ubiquitous.'''

Cultured salmon species are the most frequently affected: susceptible fish include: '''brook trout, rainbow trout, brown trout, lake trout, walleye, whitefish, carp, dace and suckers.'''

Cultured salmon species are the most frequently affected. Susceptible fish include: '''brook trout, rainbow trout, brown trout, lake trout, walleye, whitefish, carp, dace and suckers.'''

==Clinical Signs==

==Clinical Signs==

'''Internal, systemic infection''' can also be a sequel of CWD.  

'''Internal, systemic infection''' can also be a sequel of CWD.  

In '''Rainbow Trout Fry Syndrome''', acute disease is usual and '''mortality can approach 60%''' which is devastating in the commonly affected populations of tens of thousands of young fish. Shortly before death, fish are lethargic, have '''darkened skin, inappetance and demonstrate exopthalmos'''.  

In '''Rainbow Trout Fry Syndrome''', acute disease is usual and '''mortality can approach 60%''' which is devastating in the commonly affected populations of tens of thousands of young fish. Shortly before death, fish are lethargic, have '''darkened skin, inappetance and demonstrate [[Exopthalmos - Fish|exopthalmos]]'''.  

Salmonid fish can also acquire a '''chronic form of CWD characterised by erratic “corkscrew” swimming, blackened tails and spinal deformities'''.<ref> Blazer, V., Stark, K., Starliper, C (1996) '''Unusual histologic manifestations of ''Flexibacter psychrophila'' in hatchery salmonids'''. In: 21st Annual Eastern Fish Health Workshop. ''Gloucester Point, Virginia'', 5-6 September, 10</ref> This may follow recovery from typical CWD.

Salmonid fish can also acquire a '''chronic form of CWD characterised by erratic “corkscrew” swimming, blackened tails and spinal deformities'''.<ref> Blazer, V., Stark, K., Starliper, C (1996) '''Unusual histologic manifestations of ''Flexibacter psychrophila'' in hatchery salmonids'''. In: 21st Annual Eastern Fish Health Workshop. ''Gloucester Point, Virginia'', 5-6 September, 10</ref> This may follow recovery from typical CWD.

{{Learning

{{Learning

|flashcards = [[Cold Water Disease Flashcards]]

|flashcards = [[Cold Water Disease Flashcards]]

}}

}}

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[[Category:Fish Diseases]]

[[Category:Fish Diseases]]

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