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Pimelodus pictus


Pimelodus pictus
Pictus Catfish
豹斑脂鲶
Pimelodus pictus, also known as the pictus cat, is a small (11–12 cm) member of the Pimelodidae family of catfishes, native to the Amazon and Orinoco river basins and commonly kept as a pet in freshwater aquariums. It was described by Franz Steindachner in 1876. Pictus cats are sometimes mislabeled as Angelicus cats in the aquarium trade, but the latter name actually refers to an unrelated African catfish, the mochokid Synodontis angelica.
Pimelodus pictus should not be confused with Leiarius pictus, a much larger (60 cm) pimelodid.
Pimelodus pictus, like other members of the Pimelodidae, are known for having extremely long barbels. These can extend all the way to the caudal fin. The fish are silver-colored with black spots and stripes. They have sharp spines on their dorsal and pectoral fins, which makes shipping a difficult task, since the spines can pierce plastic bags and get caught in nets. There is relatively little sexual dimorphism, with females being slightly larger than males. Like many catfish, P. pictus has a downturned mouth and a forked tail.
These fish are active swimmers and, like many catfishes, nocturnal bottom feeders. Two forms are known; a large-spotted form and a small-spotted form. Of the two, only the large-spotted form is commonly seen in the aquarium trade; it does not grow as large as the small-spotted form.
In captivity, these fish prefer soft water and are omnivorous; pictus cats eat bloodworms, beef heart, insects, vegetables, and prepared fish foods. They will also eat very small fishes and Neon Tetras. Despite this, they are generally non-aggressive and will not harm fishes too large for them to eat. They are also non-territorial and can be kept with other P. pictus. Besides the mildly venomous sting imparted by the dorsal spine, they are generally harmless to humans.
In the wild, Pimelodus pictus has an estimated average trophic level of 3.19 and is not believed to be vulnerable.

又名珍珠大帆鲶,原产哥伦比亚,属鲶科。体长11-12cm,头三角形,嘴上有2对须,背鳍高耸挺拔,胸鳍上鳍条坚硬。体色银白略带黄色,身上密布细碎的小黑点,背鳍、尾鳍上也有小黑点。饲养水温22-28℃,水质喜弱酸性软水,喜夜间活动,白天常躲在岩缝中,饵料有鱼虫、水蚯蚓等。繁殖方法不详。
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