Corydoras aeneus

Corydoras aeneus
Bronze Corycat

Bronze Corycat

Long Fin Bronze Corycat
Albino Bronze Corycat

Gold Stripe Corycat

The bronze corydoras (Corydoras aeneus), green corydoras, bronze catfish, lightspot corydoras or wavy catfish is a tropical freshwater fish in the "armored catfish" (Callichthyidae) family. It is widely distributed in South America on the eastern side of the Andes, from Colombia and Trinidad to the Río de la Plata basin. They were originally described as Hoplosoma aeneum by Theodore Gill in 1858 and have also been referred to as Callichthys aeneus The adult size is 6½ cm for males and a slightly larger 7 cm for females (2½ to 2¾ inches). Their average life span is 10 years. It has a yellow or pink body, white belly, and is blue-grey over its head and back. Its fins are yellow or pink and immaculate. In common with most Corydoras the dorsal, pectoral and adipose fins have an additional sharp barb and have a mild poison which causes fish which try to attack them to get stung. A brownish-orange patch is usually present on the head, just before the dorsal fin, and is its most distinctive feature when viewed from above in the stream. Their upper sides are often a greenish color, which is the reason another common name for this fish is the green corydoras.
Like many other catfishes, females are larger than males in this species. 
They are found in quiet, shallow waters with soft bottoms that can sometimes be heavily polluted by clouds of disturbed mud from the bottom, but it also inhabits running waters. In its native habitat, it inhabits waters with a temperature range of 25 °C to 28 °C, pH 6.0-8.0, and hardness 5 to 19 DGH. Like most members of the Corydoras genus, these catfish have a unique method of coping with the low oxygen content that prevails in such environments. In addition to utilizing their gills like any other fish, they rapidly come to the surface of the water and draw air in through their mouth. This air is then absorbed through the wall of the intestine and any surplus air is expelled through the vent. It typically stays in schools of 20 to 30 individuals. It feeds on worms, benthic crustaceans, insects, and plant matter.

They are a hardy and useful aquarium fish despite having a coloration that is by no means striking or unusual. Many aquarists are fascinated by the habits of these fish. They ceaselessly comb the bottom of the aquarium for food and therefore disturb it slightly, sending up detritus and waste material that has settled loosely on the bottom. They prefer being kept in groups of 5 or more, being sociable fish and are ideal fish for a community tank. Other Corydoras species can be placed in the same aquarium, and despite the strong resemblance many species bear to one another, the species will tend to separate out and only move about among their own kind.

咖啡鼠无疑是最平易近人的鼠鱼,除了能见度高,对于环境的强韧适应力更是许多初学者亲近的好选择。由于它们分布广泛,因此即使同样是咖啡鼠也会有很多种表现形态,有的体色偏黑、有的偏红;其中还有野生的咖啡鼠,例如市面上俗称的红头咖啡鼠,比起人工繁殖的个体,它的体型就较为壮硕;而市面上常见的白鼠,就是咖啡鼠的白子. 容易饲养,是新手喜欢的老鼠品种,也是容易购买到的老鼠鱼。