The Thai Journal of Veterinary Medicine


Gill lamellae from the snakehead fish (Ophicephalus striatus) in recent massive outbreak of fish disease in Thailand were studied by light and scanning electron microscopy. The pathological findings were non-specific and were not suggestive of any causative organism or agent. Bacteria, fungi and protozoa were not identified. Apart from frank necrosis in some area of the gill lamellae, swelling of the covering epithelial cells as evidenced by bulging of the cell surface, distortion and reduction of the microvilli and ridges and complete loss of the microvilli and ridges, was a constant finding. The authors reported these findings in order to add to other pathological findings already described. The usefulness of the fish gill as an experimental model for studying the effects of aquatic environmental toxins was emphasized.

First Page


Last Page