Fig. 6
From: Histopathological evaluation of Wallago attu (Bloch & Schneider, 1801) infested by ectoparasites
a Infested gill with damaged gill arch (DGA), necrosis of secondary gill filaments (NSGF), secretion of mucus (SM). b Infested gill with aneurysm in secondary gill lamella (ANSGL), curling of secondary gill lamella (CSGL), thinning of central core (TCC). c Gills showed damaged epithelial cells due to parasite attachment (DECPA). d Infested gill with aneurysm in secondary gill lamella (ANSGL), curling of secondary gill lamella (CSGL), thinning of central core (TCC), degeneration of primary gill lamella (DPGL)