Answer-'Epizootic Ulcerative Syndrome' (EUS), a serious fungal disease affecting both wild and cultured fre...

Explanation Epizootic Ulcerative Syndrome EUS, caused by the fungus Aphanomyces invadans, is primarily characterized by the appearance of deep, red-to-grey ulcers or lesions on the body surface of affected fish, often leading to significant mortality during disease outbreaks, particularly following sudden drops in water temperature.

Question

'Epizootic Ulcerative Syndrome' (EU

S , a serious fungal disease affecting both wild and cultured freshwater and estuarine fish populations across South and Southeast Asia, is primarily characterized in affected fish by the appearance of:

A Excessive scale loss occurring without any visible lesions

B Complete loss of fins as the sole visible symptom

C Deep, red-to-grey ulcers/lesions on the body surface

D Abnormal gill coloration as the only observable symptom

E Abdominal swelling caused purely by internal fluid accumulation

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