Aspergillus infection on Chrysichthys nigrodigitatus was found in a study of the fisheries ecology of the Niger Delta region of Nigeria. The discovery of the fungus infection on fish is the first of its kind in the region. Its occurrence was attributed to environmental degradation resulting from incessant oil spillages that pollute the region water. Several scientists in the region had reported involvement of the parasite in the degradation process of spilled crude oil in water bodies of the

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... ion. This discovery shall therefore serve as warning signal for precaution against similar potential virulent degrader, yet to be known in the region or elsewhere in the world.