Water pollution due to agricultural and industrial processes may cause adverse biological effects in aquatic organisms such as fishes. The removal of brilliant green (BG) dye from aqueous solution using seaweed Sargassum wightii was carried out. Further, it aimed to evaluate the exposure of BG dye activity on hematological, plasma biochemical, enzymological activities and histopathology of Indian major carp, Labeo rohita as a biomarker. High mortality rate (T₂ 65%) in the fishes exposed to untreated BG dye shows the toxic nature of the dye. Whereas fishes grown in treated BG dye showed less mortality rate (T₃ 25%) and (T₁ 30%) which depicts the less toxicity. The observed behavioral, biochemical, hematological and enzymological parameters were showed a significant increase in the treated BG dye. Extensive histopathological lesions in gill, liver and kidney tissues were observed in untreated BG dye compared to fishes grown in S. wightii-treated BG dye might be due to the stress caused by the toxic presence in the dye. The results concluded that S. wightii-treated BG dye does not have any inhibitory effect which reveals the nontoxic nature.

农业和工业过程造成的水污染可能会对鱼类等水生生物造成不利的生物影响。使用海藻马尾藻从水溶液中去除亮绿（BG）染料。此外，其目的是评估 BG 染料活性暴露对印度主要鲤鱼Labeo rohita的血液学、血浆生化、酶学活性和组织病理学的影响作为生物标志物。暴露于未经处理的 BG 染料的鱼类的高死亡率（T ₂ 65%）表明了该染料的毒性。而在经过处理的 BG 染料中生长的鱼则表现出较低的死亡率 (T ₃ 25%) 和 (T ₁ 30%)，这表明毒性较低。观察到的行为、生化、血液学和酶学参数显示，经过处理的 BG 染料显着增加。与在S. wightii处理的 BG 染料中生长的鱼相比，在未经处理的 BG 染料中观察到鳃、肝和肾组织中广泛的组织病理学损伤，这可能是由于染料中存在的有毒物质引起的应激所致。结果表明，经S. wightii处理的 BG 染料没有任何抑制作用，表明其无毒性质。