Histology A gill arch of the right side of each fish was collected and fixed in Bouin’s fluid for 24 h, dehydrated in graded ethanol concentrations and embedded in paraffin wax.
HistologyA gill arch of the right side of each fish was collected and fixedin Bouin’s fluid for 24 h, dehydrated in graded ethanol concentrationsand embedded in paraffin wax.