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Puntius nigrofasciatus


Puntius nigrofasciatus
Ruby Barb
黑宝石倒钩
The black ruby barb (Puntius nigrofasciatus) or purplehead barb is a tropical fish belonging to the minnow family (Cyprinidae). Originating from Sri Lanka in forested streams from the Kelani basin to the Nilwala basin, they are found in streams on hills around 1000 ft (300 m) in elevation. The brightly colored population introduced to Mahaweli at Ginigathena, Sri Lanka. It was originally named Barbus nigrofasciatus.
The young fish has a yellowish gray body with black vertical stripes. The silver body turns into a dark ruby red color in mature, breeding males. In the female, the basal part of all the vertical fins are black. In the male, the whole dorsal fin is a deep black, the anal fin blackish red, and the pelvic fins are reddish. The fish will grow to a maximum length of 2–3 inches (6–8 centimeters) with the female being slightly longer than the male.

黑宝石习性活泼,色泽艳丽,观赏价值较高。这种鱼应饲养在大型鱼缸内,缸中要放置一层浮生水草,尽可能多的接受阳光的照射。黑宝石爱在水的中层游动,对水质的要求不是很严格,但是喜欢生活在微硬的水里,在24~27℃的水温下生活良好 
黑宝石容易繁殖,在繁殖期间会披上美丽的婚姻色,而且性情会大变一反常态,常常乱咬缸中水草。挑选一条腹部膨胀的雌鱼和一条色彩鲜明的雄鱼做亲鱼,应在缸底部放置一层金丝草,黑宝石最爱在早晨产卵,繁殖时必须考虑这一点,黑宝石的卵微有黏性,常粘附在金丝草的枝叉上,产卵结束以后应将亲鱼立即捞出来,否则亲鱼会将鱼卵取食干净。一对亲鱼每次产卵150粒左右,受精卵在24小时左右孵化,仔鱼在孵化后第二天开始游动
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