Corydoras Catfish – Profile | Types | Size | Breeding | Eggs

corydoras catfish
(Last Updated On: April 13, 2021)

Corydoras is a genus of freshwater catfish within the household Callichthyidae and subfamily Corydoradinae. This article will discuss Corydoras Catfish types, size, breeding, and eggs.

Corydoras Catfish profile

The Corydoras catfish species often have extra restricted areas of endemism than different callichthyids, however, the space of distribution of your entire genus nearly equals the world of distribution of the household, apart from Panama the place Corydoras isn’t current.

Corydoras species are distributed in South America the place discovered east of the Andes to the Atlantic coast, from Trinidad to the Río de la Plata drainage in northern Argentina.

Species assigned to Corydoras show a broad variety of body shapes and coloration.

Corydoras catfish is a small fish, starting from 2.5 to 12 cm (1.Zero to 4.7 in), and are shielded from predators by their physique armor and by their sharp, usually venomous spines.

One of many first-backsides feeding Corydoras catfish many aquarists buy is the albino Cory cat or one among its family.

There are over 170 acknowledged species of Corydoras, with 100+ species but to be given scientific names.

Corydoras Catfish

They belong to the Household Callichthyidae and vary all through South America, from the Andes Mountains to the Atlantic coast, and from Trinidad to northern Argentina.

Brochis and Aspidoras species occupy smaller, overlapping ranges and are included in this care information as they’ve comparable aquarium wants.

All three genera are peaceable backside feeders that may be stored in neighborhood aquariums. They’re closely armored and have sharp spines on their pectoral and dorsal fins.

Corydoras catfish needs to be taken when dealing with them, as some species have a light toxin of their spines.


Corydoras are typically present in smaller-sized streams, alongside the margins of bigger rivers, in marshes, and in ponds.

They’re native to slow-moving and nearly nonetheless (however seldom stagnant) streams and small rivers of South America, the place the water is shallow and really murky. Most species are bottom-dwellers, foraging in sand, gravel, or detritus.

The banks and sides of the streams are lined with a dense development of vegetation and that is the place the corys are discovered.

Corydoras catfish inhabits all kinds of water varieties however have a tendency towards smooth, impartial to barely acidic or barely alkaline pH and 5-10 levels of hardness.

Corydoras catfish will tolerate solely a small quantity of salt (some species tolerate none in any respect) and don’t inhabit environments with tidal influences.

They’re typically seen in shoals. Most species desire to be in teams and lots of species are present in faculties or aggregations of lots of and even 1000’s of people, often of a single species, however often with different species combined in. Not like most catfishes, which are nocturnal, these species are lively in the course of the daytime.

Their most important meals are bottom-dwelling bugs and bug larvae and numerous worms, in addition to some vegetable matter.

Though no corys are piscivorous, they’ll eat flesh from lifeless fishes. Their feeding methodology is to go looking at the underside with their sensory barbels and suck up meal objects with their mouth, typically burying their snout as much as their eyes.

Pure Habitat for Corydoras

Corydoras, Brochis, and Aspidoras species inhabit smaller streams and rivers, backwaters, oxbows, ponds, and marshy environments.

The water of Corydoras catfish is obvious, sluggish transferring, and comparatively shallow. The underside is often made up of sand or detritus, and the shoreline typically has dense plant development, providing them cover.

Corydoras Catfish

Water Necessities for Corydoras

Corydoras, Brochis, and Aspidoras species are present in smooth water with a low pH within the wild, nonetheless, many species offered right now are commercially raised and tolerate a lot wider vary of water chemistry.

A pH between 7. Zero and eight.0, alkalinity between 3° and 10° dKH (54ppm to 180ppm) and temperature between 74° and 80° F are very best situations for many captive-bred Cory cats and their family.

Wild-caught fish might require a pH of 5.5 to 7.Zero and alkalinity under 3° dKH (54ppm). If the aquarium is stored in a room under 74°, use an Aqueon Aquarium Heater to take care of the right temperature.

Pristine water high quality for Corydoras catfish is important to good health in these catfish. They need to by no means be added to new aquariums or these which have been uncared for.

Keep good filtration and alter 10% of the water each week or 25% every 2 weeks utilizing an Aqueon Aquarium Water Changer or Siphon Vacuum Gravel Cleaner.

Don’t overlook to deal with faucet water with Aqueon Water Conditioner earlier than refilling your aquarium for Corydoras catfish!


A 30-gallon aquarium is greatest for many species, though pygmy Corys comparable to C. hastatus, C. habrosus and C. pygmaeus will be stored in smaller aquariums.

As a result of these fish prefer to congregate in teams, open areas need to be obtainable close to the entrance of the tank. Some cowl also needs to be supplied for them to take refuge in.

The substrate needs to be sand or superb gravel with rounded edges. Keep away from jagged supplies that would injury their barbels as they forage alongside the underside.

corydoras catfish

Corydoras Habits/Compatibility

Corydoras, Brochis, and Aspidoras species are shoaling fish, which means they like to hang around collectively.

Totally different species will be combined, and they’ll typically group collectively. For the greatest outcomes, they need to be bought in teams of 5 or extra.

These Corydoras catfish will typically dart to the floor to gulp air. This conduct is regular, nonetheless, gasping on the floor always could also be a sign of water high-quality issues or low oxygen content material.

Not like many catfish, that are nocturnal and will be secretive, Corydoras catfish and their family are usually out and about in the course of the daytime. They are often stored with the most peaceable neighborhood fish.

Totally different species attain numerous sizes as adults, so Corydoras catfish species choice needs to be based mostly on tank dimension and the varieties of fish you retain.

At all times seek the advice of an aquarium professional earlier than shopping for any new Corydoras catfish on your aquarium.

What Do Corydoras Eat?

Corydoras catfish and their family are omnivores and usually feed on the underside, though it’s not unusual for them to study to come back to the floor for meals when hungry.

Aqueon Backside Feeder Tablets, Shrimp Pellets, Tropical Granules, and Algae Rounds are all wonderful meals for these catfish.

For the greatest outcomes, feed a wide range of high-quality meals and rotate your fishes’ food plan each day. Corydoras catfish feeds solely what your fish can eat in 2 to three minutes, a few times a day.

Corydoras Breeding Stage – Tough

Corydoras catfish and their family are egg depositors and are recognized to position their adhesive eggs amongst vegetation and even on the aquarium glass.

Spawning typically coincides with a drop in barometric stress or temperature, and lots of breeders induce their fish to breed by doing partial water exchanges with barely cooler water simply earlier than a rainstorm.

Within the aquarium

The Corydoras catfish genus is well-known amongst aquarists for its many decorative species.

They’re nicely suited to tropical freshwater neighborhood aquariums, as they get alongside nicely with different species and will not be aggressive.

Corydoras catfish are fairly timid and are advisable to be stored in shoals of three upwards. Corys are largely backside feeders, so they need to be provided sinking pellets in addition to dietary supplements of reside and frozen meals.

If flake meals are used, care needs to be taken for Corydoras catfish to stop all meals from being eaten by sooner transferring fish on the increased ranges of the tank.

Most corys desire smooth, acidic water. They will, nonetheless, tolerate a variety of water situations, together with temperatures that can be cooler than tropical. They don’t do nicely in fish tanks with excessive nitrate ranges.

This ion results in an infection of the barbels, which can shorten and develop into ineffective. The barbels can also be affected by fixed contact with a pointy substrate.

Opposite to standard perception, Corydoras catfish will be stored in a tank with gravel, so long as there aren’t any sharp edges on the gravel without affecting their barbels, though they do desire sand substrate.

They’re extra prone to thrive if there’s an open space of substrate on the underside of the tank the place they will acquire submerged meals. It’s a fantasy that salt can’t be used on this species of fish as a method of parasite medicine.

Salt will be added to the water of the Corydoras catfish with the purpose to rid of the fish of ich. These fish are pretty simple to maintain, being peaceable, hardy, lively, and entertaining.

Sometimes they’ll dart to the floor, sticking their snout above the water for an immediate to take a “breath” of air.

This action is completely regular and isn’t a sign that something is incorrect with the Corydoras catfish. Nevertheless, if that is achieved in extra, it will probably point out poor water situations.

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