Macrotocinclus affinis


Macrotocinclus affinis
Golden Otocinclus
黄金精灵
The golden oto (Macrotocinclus affinis, formerly Otocinclus affinis) is one of the smallest known suckermouth catfish, often called a 'dwarf oto'. Typically found in Southeast Brazil, this herbivorous, rheophilic, bottom-feeder only grows to around 4 cm (1.6 in) in length. These small fish are often used for the purpose of controlling algae in small home aquariums.
M. affinis is a Batesian mimic of Corydoras nattereri. Due to its narrow stripe, O. affinis resembles this Corydoras species more than it does Otocinclus species.
M. affinis prefers an aquarium with fast moving water, sandy substrate, and plenty of hiding areas. Preferred pH is slightly acidic with a tank temperature of 22–28 °C。 This particular species is not as hardy as many of the other Otocinclus species.

体长4公分左右,原产于南美洲巴西东南部地区。棕灰色的身体,从眼睛到尾柄部有一条贯穿的纵纹。此鱼喜欢用嘴上的吸盘,舔食水族箱中的各种苔藻类。有些板口鲶会吃水草,但耳斑鲶却不会,草缸大可放心饲养
此鱼体形细小,能游入极为狭小的空间,吃尽苔藻,同时也可将水族箱内最使人烦恼的蜗牛卵吃得一干二净,进而控制蜗牛的数量,绝对称得上是水族箱中最佳的清洁工。因此鱼主要以藻类为食,当水族箱中缺乏藻类时,极易死亡。适宜温度为22~30°C,喜弱酸性软水,最好饲养于有密植水草并有阳光照射的水族箱中。此鱼性情温和,不吃鱼虾,能与大多数性情温和的小鱼混养。
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