Guianacara Stergios is a rare fish found in Venezuela, South America. Coming from a Cichlid family, this fish is native to freshwater habitats.

If you’ve made up your mind to make Guianacara stergiosi your pet fish, you must know all tids and bits about it.

A quick background on the Guianacara stergiosi, they are a small genus of cichlid fish. These fish mostly live in moderately flowing clear or blackwater rivers and streams but also occur in seasonally flooded lagoons. They are usually found over bottoms consisting of sandy patches mixed with large rocks.

Our professional fish keepers will guide you about everything in this article, from its size to breeding advice. First thing first, here’s a care guide of Guianacara stergiosi, coming straight from the horse’s mouth.


Scientific name: Guianacara Stergios
Common name: Guianacara Stergios
Habitat: Venezuela, South America
Min Tank Size: The volume of a water tank to be 40 gallons
Diet: Cichlid sticks, frozen beef heart, shrimps, and dry food at times
Behavior: Peaceful; needs to be kept in schools
Water parameters: pH of the water should be between 5.5 – 7.2.
Water temperature: 75.2 – 82.4 F
Care: Easy
Communities: Doesn’t like to live with other species in one aquarium

How to Take Care of Guianacara Stergiosi?

When it comes to taking care of Guianacara stergiosi, you’ll have to take care of many factors to provide it with a favorable environment. Let us begin with the furnishing of an aquarium.

– How Should the Aquarium of Guianacara Be Furnished?

Guianacara wants to inhabit a calm and cozy environment. Thus, make sure you are providing a comfortable environment to your pet fish in the aquarium. Because Guianacara stergiosi is innate to living along shallow banks and stony substrates, your aquarium should be equipped with a soft grainy bottom and rocks.

– How You Should Position Rocks

You should place the rocks in a way that forms caves and visual barriers in the tank. Doing this will help your pet fish experience a friendly home as if it’s living in a natural habitat.

– Are There Calm Zones and Swift Currents in the Aquarium?

The aquarium of Guianacara stergiosi should have some quiet zones and swift currents in the habitat. You can create these swift currents with the help of powerheads present in the aquarium. Along with powerheads, the winds can also be formed by using the decor present in the aquarium.

Disclaimer: The fish can dig pits in the substrate. Therefore, make sure that they can’t undermine the substrate.

– Water Parameters for Guianacara Stergiosi?

Guianacara stergiosi loves to live in fresh and cozy water. Thus, it should be your utmost priority to change the water in the water tank every day.

While changing water, make sure the water you are putting in is soft and slightly acidic. The use of hard water is highly prohibited because Guianacara stergiosi is extremely uneasy in it.

The pH of the water should be between 5.5 – 7.2. The water having such pH is soft plus a bit acidic. Therefore, keep a sharp eye on it.

– Temperature: What Temperature Is Suitable for Guianacara stergiosi?

Guianacara stergiosi inhabits a moderate temperature. Neither so cold nor so hot. The optimum temperature required by this fish is 75.2 – 82.4 F. Therefore, make sure the aquarium has mentioned temperature and is not more or less than it.

Tank Mates: Does Guianacara Stergiosi Like to Have Tank Mates?

Not really. Guaiancara Stergiosi doesn’t like to live with other species in one aquarium. Though this fish is pretty social, it’s not suitable to keep them with the general community.

These fish are peaceful but keeping them with other communities is not wise. However, you can keep this fish with a group of 6 different fish having the same species.

Some territorial quarrels may arise in the male fish, but no real damage occurs like this. So, it’s reasonable to keep them with the species of fish.

Quick Cue: Make sure the tankmates of the fish are small in size and less aggressive.

Breeding: How Does Guianacara Stergiosi Breed?

Guaianacara stergiosi are fond of living in caves. They easily mate in shelters, either in natural habitats or in a home aquarium. The only thing that you need to take care of is the environment. Provide them with a selection of caves. You can place terracotta flower pots in the aquarium. They can work well in providing a breeding atmosphere.

– How Does the Female Fish Give Off the Eggs?

When the female Guianacara stergiosi is ready to spawn, she cleans the cave’s surface and entices the male. When the eggs are prepared to come out, she lays them on the vertical surfaces of the cave.

Quick Fact: The female Guianacara stergiosi gives off 500 eggs in one go.

As soon as the eggs are laid, the male fish fertilize them all. After this process, the female fish continues to take hold of care duties while the male joins in to protect the babies when they get young.

Comparing Numbers With the Guianacara Stergiosi

These small species of Cichlid fish are native to the South American sea. On average, they can grow up to 12 cm or 4.7 inches, with the male species having the upper hand. A distinctive bump on the males’ head is a unique feature.

Moreover, the advised conditions for these species recommend the volume of a water tank to be 40 gallons. Plus, for these species, no special regulations of lighting are required.

Fun Fact: The fish has a light skin color having a black spot on the mid of the body with small fins.

Guianacara Stergiosi and Other Species in the Sub-Genus; Guianacara

Guianacara stergiosi is different from all other species because of the presence of a mid-lateral bar and a dark spot on its body. This mark is the exclusive distinction that makes it different from other species in this sub-genus. The fish looks particularly unusual from other fish types and is a newly discovered species.

Concerned if It’s Harmful or Not?

Guianacara stergiosi is quite benign to humans. It gives no harm to people. Thus, you can easily keep this species in your home aquariums and admire their beauty.

Moreover, a group of 6 Guianacara stergiosi in your aquarium can generate more and more fish. You can relish taking care of those offspring as well.

What to Feed Guianacara Stergiosi?

Taking care of the diet of your pet fish is the most crucial thing. Guianacara stergiosi eats a variety of eatables. Make sure you’re providing your fish with everything it likes and makes it happy and healthy. Following is the list of items the fish feeds on:

  • Vitamin-enriched brine shrimp
  • White mosquito larvae
  • Bloodworm
  • Mysis
  • Daphnia
  • Various dried foods such as:
    • Flake
    • Green flake
    • Crisps
    • Slow sinking granules
    • Cichlid pellets

Get these from the market and feed your pet fish with its favorite food.

More About Guianacara Stergiosi

If you are on the lookout for an entertaining fish that gets acquainted with most of the conditions, Guianacara stergiosi is the one. The standard Guianacara stergiosi size can be up to 12 cm or 4.7 inches. Although their adult size is relatively small, they are pretty aggressive towards each other.

However, to overcome this, you can add stones, roots, or driftwood to your aquarium to serve as hiding places. If you have less space, keep them in a pair or, if you have plenty of space, keep them in a group. You can also add other fish of the same size to the tank.

When talking about Guianacara stergiosi growth rate, they are very medium growing fish found in acidic or soft water. If you provide your fish with the proper care and love, you can expect Guianacara stergiosi lifespan to be around 5 to 8 years.

If you are an avid fan of watching your fish in the aquarium, it can be your full-time companion. Guianacara stergiosi is an active and engaging fish that can sift sand through its gills as well.

To own this fish, you require a bigger tank so that it can nourish and grow properly.


Now that we have provided you with all of the necessary information to own Guianacara stergiosi, here are some takeaways that you should keep in your mind:

  • Do not keep Guianacara stergiosi with the general community.
  • Position rocks in a way that forms caves and shelters.
  • There is no need to focus on the light of the tank.
  • Make sure you change the water every day.
  • Water should be fresh and soft.
  • Do not place more than six fish in one tank.
  • Provide the fish with a spacious tank.
  • Make sure the substrate can not be undermined.
  • Decor the tank with terracotta towers to provide them with the breeding environment.

That said, this is the end of this post. On this note, we would like to emphasize that you are tick marking all of these points mentioned above. This way, they’ll stay healthy and happy in your home aquarium.

If you wish to add a new fish to your collection, Guianacara stergiosi is an excellent choice. This peaceful fish might just be the fish you need for your home.

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