Its rarity is basically resulting from habitat loss and overfishing. The species is a crucial indicator of river ecosystem wellness, highlighting the necessity for conservation. 非基本面分析：美元指数维持高位将抑制油价上涨；期货净多头低位运行，市场呈看空趋势，阻碍油价上行；黄金价格持续走高，市场避险情绪浓厚，一定程度利好原油市场；地缘政治风险高，特朗普上任后美伊博弈、俄乌及巴以等冲突... https://aquariumtanksonline.blogspot.com