Archive for the Catfish category

Bronze Corydoras (Corydoras aeneus)

Bronze Corydoras

Species Details

Adult size: 3″
Origin: South America
Sexing: Females are plumper
Care level: Easy
Diet: Omnivore
Breeding method: Egg-depositor
Breeding potential: Moderately easy

Tank conditions

Minimum tank size: 20 gallons
Temperature: 24-28’C


Bronze Corydoras catfish are the most common Corydoras species in the aquarium trade. They have a brown/grey colored body with a white underbelly with bronze /green iridescent coloring along their flanks. Their down facing mouths have barbels to help them detect food as they swim along the bottom. Corys can live up to ten years if well cared for. One interesting characteristic of corys is their amusing ability of rolling their eyes seeming to wink at you!

Corys are well protected from predators. Instead of scales, they have two rows of scutes along their flanks. Scutes are bony external plates similar to scales. It acts like armour giving corys extra protection from predators. Corydoras are quite capable of defending themselves and actually have sharp barbs on their dorsal and pectoral fins, which can sting other fish if they try to attack.

Corydoras are ideal inhabitants of a community tank. They have a very peaceful temperament and will not bother your other fish. In the wild, they will move in large schools searching the river bed for food and they also need their own kind as company in home aquarium. They should be kept in groups of at least six.

They will get along with all other community fish but it is best that you avoid keeping them with too many other bottom feeding species to prevent competition over food. They will mix best with fish that swim in the middle and upper levels of the aquarium. Rainbowfish, tetras and angelfish are just a few examples of suitable Corydoras tank mates.

Corydoras are a bottom dwelling species. They will root around the bottom burying their barbels into the substrate as they scavenge for leftover food. They must be kept in an aquarium with rounded gravel or sand to prevent their barbels becoming damaged. They should be provided with plenty of natural retreats including planted areas and caves.

They require a well balanced diet and should be fed on sinking foods to enable the food to reach the bottom before being consumed by other fish. Corys will naturally enjoy live and frozen foods like bloodworm but will also appreciate sinking tablet foods and pellets.

Female Corydoras are identified as being plumber than the males, which is more noticeable when looking from above. When kept in relatively large shoals in the aquarium corys will begin to pair off when they are ready to breed. The pairs can then be separated into breeding aquariums ready for spawning. Breeding pairs should be fed on a good diet.

In nature, corys will breed during the rainy season. This can be simulated by making a fifty percent water change using cool water, which can often induce spawning. During spawning the pair will adopt the “T-position”. The pair will lay around one hundred or more eggs and attach them to a submerged surface such as a clay pot cave or plants. When the fry hatch, they should be removed from their parents and fed on baby brine shrimp until they are large enough to accept regular foods.

Catfish aka Channel Catfish aka


Source: From Wikipedia, the free encyclopedia

Catfish (order Siluriformes) are a diverse group of fish. Named for their prominent “barbels”, which give the image of cat-like whiskers, they are found in primarily freshwater environments of all kinds, with species on every continent except Antarctica. Some species from the families Ariidae and Plotosidae are also found in marine environments. They feature some of the smallest known vertebrates, including the candiru, the only vertebrate parasite to attack humans, as well as Pangasianodon gigas, the largest reported freshwater fish. There are armour plated types and also naked types, but they do not have scales. Not all catfish families have barbels; what defines a fish as being in the Siluriformes order are certain features of the skull and swimbladder.

What Are Bottom Water Tropical Fish?

What Are Bottom Water Tropical Fish?

By Nate Jamieson

Bottom water fish are those that prefer living at the lowest level of the aquarium. It’s not that they can’t swim into the upper regions, they will when spurred by a fish that pesters them, or just for the sake of a quick dash around the tank. But for the most part, they live on the bottom, which is where most of their food comes from.

Tropical fish that prefer the bottom of the tank, usually eat algae that grows there, as well as leftover food that falls on the substrate or the broad leaves of some plants. In a way, the bottom water fish are the housekeepers of your aquarium, cleaning up scraps and preventing the build up of algae. But this is not always a sufficient diet, and they need to be given food that comes in a form or shape specifically designed to reach, and appeal to the bottom feeder.

This is usually a wafer shape, dense enough that it sinks past the top and middle feeders, to rest on the bottom and soften. The bottom feeders can then browse at their leisure, returning later to clean up the remains. In that respect, they are not like top and middle feeders, where food is given a pinch at a time, and feeding should stop as soon as they lose interest. Those tropical fish that hang around the bottom tend to be “grazers”, and not the gulpers that you’ll find dashing for the surface when they see you coming.

Some of the better-known bottom water fish are the loach, and catfish. There are also algae eaters, Botia, Corys, Knifefish and the more unusual specimens like Goby and Needle Nose.

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