Mosaic corydoras Care Guide: Diet, Tank Mates, Diseases, Breeding & More

Updated: December 17, 2022

The Mosaic Corydoras is a stunning freshwater fish that is perfect for beginner aquarists. They are very easy to care for and are very peaceful, making them a great addition to any community tank.

This guide will teach you everything you need to know about Mosaic Corydoras care. You’ll learn about their diet, size, lifespan, and more!

Species overview

Mosaic corydoras (Corydoras paleatus) are a type of freshwater fish that’s native to South America. They can be found in a number of different river basins, including the Rio Negro in Brazil and the Orinoco in Venezuela.

They prefer areas with slow-moving water and a soft substrate. This is because they’re a bottom-dwelling fish and spend a lot of their time scavenging for food.

Mosaic corydoras are a peaceful fish that gets along well with other tank mates. They’re a popular choice for community tanks because of this!

One of the most notable things about mosaic corydoras is their unique patterning. They get their name from the fact that their bodies are covered in a mosaic-like pattern of dark and light spots.


Mosaic corydoras

The Mosaic Corydoras is a very popular freshwater aquarium fish. These fish are easily recognizable by their unique coloration.

The body of the Mosaic Corydoras is a light brown color. This light brown color is then covered in dark brown spots. These spots are of varying sizes, but they’re all relatively small.

The fins on the Mosaic Corydoras are also a light brown color. The dorsal fin is taller than the rest of the fins and runs along the entire back of the fish.

The caudal fin is forked and slightly taller than the dorsal fin. The anal fin is located just behind the ventral fins. The ventral fins are located on the bottom of the fish just behind the head.

The head of the Mosaic Corydoras is a light brown color with dark brown spots. The eyes are located on the sides of the head.

The Mosaic Corydoras is a very popular freshwater aquarium fish because of their unique coloration. These fish are relatively easy to care for and make a great addition to any freshwater aquarium.


The average lifespan of a Mosaic Corydoras is between 5 and 7 years. However, there have been reports of these fish living up to 10 years in captivity.

As with most fish, their lifespan will be significantly impacted by the quality of their environment. If they’re in a well-maintained tank with good water quality, they’ll probably live on the higher end of the spectrum.


Mosaic Corydoras grow to be about 2.5 inches long.


Tank Size

Because Corydoras are a schooling fish, we recommend a minimum tank size of 30 gallons for a group of 5-6 fish. If you want to keep a larger group of Corydoras, you’ll need an additional 2-4 gallons of water per fish.

Corydoras are a peaceful community fish, so you can keep them with a wide variety of other fish. Just make sure the other fish in your tank are also peaceful and not too large (Corydoras are only 2-3 inches in size).

Water Parameters

The mosaic corydoras is a freshwater fish that hails from the streams of South America. As a result, they’re accustomed to warm water with a neutral to slightly acidic pH.

This is a relatively easy fish to care for since they’re quite tolerant of a wide range of water parameters. However, it’s still important to maintain consistent water conditions to ensure the health of your fish.

Here are a few guidelines to help you create a healthy environment for your mosaic corydoras.

  • Water temperature: 72 to 78 degrees Fahrenheit
  • pH levels: 6.0 to 7.8
  • Water hardness: 2 to 12 dGH
  • Alkalinity Levels: 4-8 dKH

What To Put In Their Tank

Corydoras are a bottom-dwelling fish, so the substrate you choose is important. A smooth, sandy substrate is best to avoid any damage to their delicate barbels.

Corydoras are also a schooling fish, so you’ll need to provide plenty of hiding places and structures for them to feel safe. Driftwood, rocks, and plants all make good choices.

You’ll also need to make sure the water is well-oxygenated. Corydoras are a peaceful fish, but they are also very active. A good filter will help to keep the water clean and the oxygen levels high.

Common Diseases

The mosaic corydoras is a pretty hardy fish, but that doesn’t mean they can’t get sick. There are a few diseases that you should look out for if you’re keeping these fish.

The most common one is ich. This is a really common disease that can affect any freshwater fish. It’s caused by a parasite and it manifests itself as white spots on the body of your fish.

If you see these spots, it’s important to act fast. Ich can be cured, but it’s important to do it quickly before it gets worse.

Another disease to look out for is Swim Bladder Disease. This is a disease that affects the swim bladder, which is a organ that helps the fish to float and swim.

If this organ isn’t working properly, the fish will have trouble swimming and may even sink to the bottom of the tank.

There are a few other diseases that can affect mosaic corydoras, but these are the most common. If you notice anything out of the ordinary with your fish, it’s always best to consult a vet or experienced fish keeper.

Behavior & Temperament

The Mosaic corydoras is a schooling fish, which means it does best when it’s kept with other fish of the same species. These fish are relatively peaceful and get along well with other fish that share their environment.

The Mosaic corydoras is a bottom-dweller, so it spends most of its time near the floor of the tank. It’s an active fish, though, and you’ll often see it swimming around looking for food.

This fish is a scavenger, so it will eat just about anything. That includes algae, dead fish, and even feces. If you see the Mosaic corydoras eating something you don’t approve of, don’t worry. It’s just doing its job!

Overall, the Mosaic corydoras is a peaceful and easy-to-care-for fish. As long as it has a suitable environment and tank mates, it will do just fine.

Tank Mates

The mosaic corydoras is a peaceful, shy fish that does best in a group. A group of at least six is ideal, but more is always better. These fish are native to South America and prefer to live in slow-moving waters with plenty of hiding places.

Mosaic corydoras are bottom-dwellers and do best with tank mates that occupy different levels of the water column. This not only reduces competition for food but also provides some interesting tank dynamics.

Some compatible fish species include:


The mosaic corydoras is a beautiful and unique-looking species that is a favorite of many aquarists. While they are not the easiest fish to breed, it can be done with some effort and patience.

Mosaic corydoras are egg-layers and typically lay their eggs on plants. In the wild, these fish will lay their eggs in areas with a strong water current so that the eggs will be oxygenated.

To breed mosaic corydoras, you will need to set up a separate breeding tank. The tank should be at least 10 gallons and should have a strong water current. You will also need to add live plants to the tank for the fish to lay their eggs on.

When the fish are ready to spawn, the female will lay her eggs on the plants. The male will then fertilize the eggs. Once the eggs are fertilized, the male will stay with the eggs to protect them.

The eggs will hatch in 3-5 days. Once the fry have hatched, they will feed on microscopic organisms in the water. You can supplement their diet with baby brine shrimp.

As the fry grow, you can start to feed them crushed flake food. Once they are large enough, you can move them to your main tank.


The mosaic corydoras is a beautiful and unique fish that is perfect for any aquarium. They are relatively easy to care for and get along well with other community fish.

The only downside is that they can be a bit more expensive than some other fish, but we think they’re worth it.

If you’re looking for a fish that will add some flair to your tank, the mosaic corydoras is a great choice!