In general, black gill condition in shrimp caused by Fusarium species initially produces generalized “gill discoloration” which gradually develops into “blackened gill” condition and eventually leading to death of affected species (Khoa, 2005).
Fusarium moniliforme has been reported on early stages of Penaeus japonicus where gills appeared to show a slight change in colour from opaque white to black spots.
Further, F. moniliforme conidia was intramuscularly inoculated to prove whether isolated fungus was capable of causing black gill disease and leads to death of shrimp (Rhoobunjongde et al., 1991).