内华达州呵吸鲤（学名：Chasmistes cujus），又名贵玉屈鱼或丘裂鳍亚口鱼，是内华达州金字塔湖特有的一种胭脂鱼科。牠们主要吃浮游植物及微小浮游生物。雄鲤最大可达53厘米长及1.6公斤重，雌鲤则长约64厘米及重2.7公斤。牠们的寿命一般为40岁，要8岁才达至性成熟。牠们是极危物种，是属内现存几个物种之一。

内华达州呵吸鲤的数量有所增加，于1993年估计数量超越100万条。牠们仍处于极危的原因是繁殖补充的变化，于1970年代及1980年代之间在数量上差不多没有补充，原因是水质及特拉基河的水流并不适合产卵。

The cui-ui (Chasmistes cujus) is a large sucker fish endemic to Pyramid Lake and, prior to its desiccation in the 20th century, Winnemucca Lake in northwestern Nevada. It feeds primarily on zooplankton and possibly on nanoplankton (such as algae and diatoms). The maximum size of male cui-ui is approximately 53 cm (21 in) and 1.6 kg (3.5 lb), while females reach approximately 64 cm (25 in) and 2.7 kg (6.0 lb). The life span of cui-ui is typically about forty years, but the fish do not reach sexual maturity until at least age eight. The cui-ui is an endangered species, and one of the few surviving members of its genus.