Fish in the Corydoras genus are classified as armored catfish since they have substantial plates that cover their bodies.
Some 180 species of Corydoras are found in the wild, but there are many more similarities between fish than differences.
For example, all corydoras are mostly in South America and are small catfish, being typically less than 7 centimeters in length.
They inhabit the entire planet, except for the poles. They live in rivers, lakes, lagoons and the sea.
This breed is excellent caretakers of the balance of the aquarium, as they eat remains of food from the bottom before they rot. They also eat the algae that grow in glasses and plants.
Corydoras Catfish are all peaceful fish, which require very similar water conditions.
Despite the many species of Corydoras, all these catfish tend to have a white, silver or brown background color.
This species owes its name to its appearance due to its whiskers, or tentacles that extend from its upper jaw. And in some species, they also show these chins in the lower jaw, which is very similar to a cat.
The catfish are a very common species of waters and belong to the family Pimelodidae, which comes from the Greek, and means, obese, or fat, so it is presumed, that this name was also put due to the fatness of its body, and its oily flesh.
Many fish of this species have spines on their pectoral and dorsal fins.
These thorns this species usually use as a defense mechanism against their predators, and hunters. And sometimes, these thorns can be poisonous, which is even more harmful to humans.
There are different families that live in America, and some of its members have a bone plate, which is covered by smooth skin.
Also, these fish have two pairs of barbels, some shorter than the others.
They also have a wider than the elongated head, the upper jaw projects in front of the lower jaw.
And his chins or whiskers are his best ally since these allow him to detect both the physical changes and the chemical changes of the environment.
The catfish Corydoras, have small eyes and a large number of small teeth, consists of a back and flanks of grayish color.
And in the lower part of its belly, it is white; some species are justified, but most catfish are matte.
Unlike other fish, catfish lack scales, since they have smooth skin, and in most species, the dorsal fin has two spines; where the first is shorter than the other.
Weight of fish:
The size of these fish is very varied since it can go from two inches to two meters in theory.
At first, the catfish usually had a weight of 20 kilograms, but this weight was reduced to 8 and 6 kilograms.
But at present, in general, most fish of this species is between 2 and 4.5 kilograms of weight. These species are not territorial and are more comfortable in the presence of others of their species.
Although these small catfish are typically peaceful, the amateur breeder must provide sufficient areas of hiding and rest for each individual fish.
Corydoras should always be housed in small groups in the aquarium. As these catfish are so peaceful, groups can be composed of different species. There are predatory species and others more timid and herbivorous.
Parameters of water:
The many species of Corydoras catfish are very similar in behavior and physical appearance, and all tend to tolerate a wide range of water parameters.
Corydoras prefer well-oxygenated water, but the members of this interesting family have the ability to swallow atmospheric oxygen from the surface of the water.
As a family of fish, corydoras tend to be more active during the night. The different species of catfish Corydoras like broad leaves of aquatic vegetation or driftwood during the day. The water temperature should be between 22 and 26º C.
Characteristics of the aquarium:
The aquarium should include rocks and trunks. It is very important that the trunks are made of natural wood since this is part of their natural diet. The vegetation must be abundant since some plants will serve as food and others as shelter.
These fish are usually in their hiding places for many hours of the day and go out to look for food remains during the night.
These fish reach sexual maturity when they measure between twenty-five and thirty centimeters long.
Or the three hundred and fifty grams of weight; but it is when they reach a weight of four and a half kilos or two or four years when they achieve sexual fullness.
Catfish Corydoras can be reproduced in aquariums, keep in mind that it is better to have partners.
The reproduction of the catfish has a lot to do with the temperature of the water, and its environment. You may also like to read killifish
Therefore, it is carried out in summer, when the temperature is close to twenty-two degrees, between May and August, and the female-only spawns once a year.
The male is able to fecundate several females; which takes place in the superficial flooded areas of rivers, lakes, and streams.
The males are very territorial and tend to dispute territories somewhat aggressively. The female lays eggs that the male takes care of with great zeal.
The catfish Corydoras are completely vegetarian and very peaceful, and other carnivorous catfish, and extremely aggressive.
However, most fish remain hidden in the mud of the streams and rivers, where they wait placidly for the current to bring them their food.
For this reason, they are not considered as hunting strategists, but rather, as opportunists.
Because instead of spending their energies looking for good prey to feed themselves, they expect it to reach their mouths.
These fish feed on fish and invertebrates, such as crabs, mollusks, aquatic plants, eggs of other fish, decomposing vegetation, carrion, snails, leeches, worms, and other smaller fish.
These are nocturnal fish, so their feeding usually happens at night. Usually this species uses its smell and whiskers to detect and find its food.
The catfish corydoras may well live in rivers, or in the sea; although usually, it is a freshwater fish, and that is where its main predator, man, most seeks it.
People who love fishing know that no matter what instruments are count if you are not in the justify place, you will not get even one catfish corydoras. You may also like to read Plecostomus
These fish usually live in ravines and waterfalls, in this, they have a lot of similarity with seabass.
Because they like to be under stones, palisades, trunks, and in general, they like deep places. As well as near the sardine banks, which is one of your favorite foods.
Although they prefer large rivers and their tributaries with warm waters, they can also be found in streams, small rivers, and lakes.
There are also catfish that live in backwaters and lagoons. And even some that can live in dirtier waters of reservoirs and ponds, which contain muddy and sandy bottoms.
This is a fish that can be obtained more easily in freshwater. And is extremely craved by fishermen, by the exquisite taste of its meat, and by the showy of its whiskers.
According to an ancient myth, it was believed that the whiskers of this fish were stinging. So people could not approach him without protective gloves, for fear of being hurt.
But the reality is even more dangerous since it is the fins of their fins, which are the most harmful to man.
As a reference: Wikipedia