Learn All About the Pictus Catfish (2024)

Origin and Distribution

The pictus catfish is a nocturnal fish native to South America. Franz Steindachner, a zoologist, described these fish in 1876.

They are found in the Amazon and Orinoco river basins, and they’re native to countries that include Colombia, Brazil, Venezuela, and Peru. But they have been kept in aquariums for many generations.

Colors and Markings

The pictus catfish has a characteristic silvery, smooth body with black spots. Like other catfish species, they do not have any external scales. They have the common barbels, used for tasting food deep in the substrate, and sharp spines on their pectoral and dorsal fins.

Take great care when handling these fish to avoid getting poked by these spines. These fish are often snagged in nets, so using an open container to handle these fish is recommended.

If your hand is perforated by a catfish spine, clean it carefully and do not return your hand to the tank water. Fish-handler's disease can be caused if these wounds are not treated carefully.

If you have any family members with compromised immune systems, including young children and elderly, there is also the risk of Mycobacteria spp. infection, commonly known as "fish tuberculosis," with fish-related injuries.

Tankmates

Being peaceful, nocturnal fish, the pictus catfish can be kept with many different species, provided they are not too aggressive during the daytime while the pictus catfish is hiding.

Ideal tankmates include:

• Blue gourami
• Giant danio
• Zebra danio
• Rainbow shark
• Other catfish species

Although they could be kept alone, it’s better to keep more than one pictus catfish in a tank, as they’re known for shoaling. Just keep in mind their large tank size requirement.

When selecting appropriate tankmates for peaceful community aquariums, make sure their water quality parameters, specifically pH, kH, and temperature, all agree.

Pictus Catfish Habitat and Care

The most important part of the pictus catfish habitat is a quiet, daytime resting place. Do not expect to see your pictus catfish much during the day unless you use subdued, muted lighting on your tank.

Be sure to have a cave or log for your pictus catfish to hide in during the day. If you have other pictus catfish, nocturnal species, or bottom feeders, such as Plecostomusspp., be sure you have enough hiding places for everyone.

In terms of tank size for a single catfish, a good place to start is a 55-gallon tank—you’ll need another 50 gallons for each additional catfish. These fish can grow to be 6 inches, and they like to swim around and roam, so they need a lot of space.

Adding plants throughout the tank can create an environment that more closely mimics their natural habitat. Maintain the water temperature around 74-78 F, and the pH at 7.0 to 7.4.

Pictus Catfish Diet and Feeding

The pictus catfish is an omnivore and will adapt easily to a pelleted diet. You are welcome to supplement your pictus catfish with both meaty and veggie treats, such as:

• Brine shrimp
• Bloodworms
• Blackworms
• Beef heart
• Vegetables

Since they are nocturnal fish, be sure to leave some food out for them when you turn off the tank lighting. In tanks with dim lighting, you may see your fish come out to eat with the rest of your tank inhabitants.

Are pictus catfish bottom feeders? Yes, but don't expect this species to clean up after your other fish. Although they are bottom feeders and will likely snack upon some detritus, it is not their primary diet and they will often require separate feeding due to their nocturnal nature.

Gender Differences

Unfortunately, the pictus catfish does not have any external sex characteristics. With individuals of the same age and care, the females may be larger than the males.

Breeding the Pictus Catfish

Breeding the pictus catfish is not an easy endeavor. Many advanced hobbyists struggle with providing a suitable habitat for these fish to lay their eggs. A very large tank is recommended, and using a group of fish will certainly increase your chances. Always make sure to properly quarantine all your new breeding fish, especially if they are coming from various sources.

As with any indoor aquarium setup, it is recommended to provide a breeding or spawning tank separate from the home tank in order to manipulate the water chemistry and provide a safe environment for any offspring. Due to the static nature of most indoor aquarium setups, changes to the water temperature or other water chemistry parameters are often required to initiate spawning.

More Pet Fish Species

If you are interested in the pictus catfish, we recommend you check out some of these other fish species:

• Suckermouth Catfish
• Panda Cory (Panda Catfish)
• Upside-Down Catfish