| the ecological complexity of the thai-laos mekong river: iii. health status of mekong catfish and cyprinids, evidence of bioaccumulative effects. | histopathology of fish organs was used as biomarkers of toxicity from environmental pollutants. a total of 117 fishes comprising of 52 cyprinids and 65 catfishes were randomly collected from the mekong river from 5 stations: chiang rai, loei, nongkhai, nakhon phanom and ubonratchathani. the health of the fish collected in december and april, winter and summer respectively, was evaluated. all fish from the 5 stations developed pathologic lesions with the same characteristics in their livers, kidn ... | 2010 | 20853201 |