Blueberry Oscar Fish: Overview & Care Guides

You’ve undoubtedly seen an enormous variety of Oscar Fish. The Blueberry Oscar fish is one of them and is well recognized.

These creatures are large, gorgeous, and blue. The blue color makes them attractive and regal in any aquarium.

Do you have any experience maintaining these creatures in your fish tank? If not, it’s better to learn about them before adding them to your tank.

Let’s check this post out to get into details!

Blueberry Oscar Fish Overview

The Blueberry Oscar fish, also known by its scientific name Astronotus ocellatus, is a member of the Cichlidae family.

This fish may grow quite large, measuring between 11 and 13 inches. Males tend to grow faster than females do.

These fish have colorful and appealing aesthetics but also exhibit complicated behavior.

Oscars have a hostile and possessive nature. They typically work to protect and develop their area.

Blueberry Oscars are omnivorous, and they can attack other species anytime.

They uproot the ornaments and plants in the tank because they cannot control their anger.

Therefore, remember that these creatures require appropriate feeding and mating periods to restrain their hostility.

They will coexist peacefully if you give them 125 – 150 gallons of water.

These fish often have an 18-year lifespan in nature. They typically have an 8–12 year lifespan in captivity.

Depending on the maintenance levels and the conditions in their tank, these creatures may have shorter longevity in captivity.

Also, it’s challenging to breed Blueberry Oscar. These creatures mature sexually around the age of one year.

After 9 to 10 years old, they begin to breed. A stable breeding pair is preferable to purchase.

Generally, females deposit about 1600 eggs, and males fertilize those eggs. The rainy season is when this species naturally reproduces.

Therefore, you may alert these creatures in your aquarium by reducing the tank’s temperature by a few degrees.

Blueberry Oscar overview

Blueberry Oscar Fish Care Guides

Blueberry Oscar is a well-liked and sensitive species to take care of. They are relatively intelligent, but they also require some space.

This guide provides all the details you need for feeding, caring for, and maintaining the aquarium for this species. Keep reading to discover!

Tank Size

Many aquarists use 55 gallons tanks to keep their Blueberry Oscars. Therefore, you can also put your fish in a 55 to 75 gallons aquarium.

A tank between 125 and 150 gallons will be ideal if you maintain two or three Oscars. These creatures cause an enormous mess.

Tank Setup

Because Blueberry Oscars are often large fish, you need more enormous aquariums for them.

Depending on your fish’s size, it’s crucial to maintain a sufficient amount of water in the aquarium.

Blueberry Oscars’ health depends on the volume and available room in the tank water.

tank setup for blueberry oscar

Water Condition

All fish species need good water conditions to be healthy. Remember that water in an aquarium is different from water in a natural ecosystem.

For this reason, you must test and maintain the water at suitable temperatures to ensure your pets are healthy and happy.

Although these creatures can tolerate a wide variety of water hardness, it’s preferable to maintain them in the 12dH to 15dH range.


Aquarium lighting is appropriate for these Oscars. They don’t need special illumination.

The best place to keep them is in an area with lots of natural light. However, it’s also okay if you prefer to decorate your tank with lights.

They favor darker lighting. As a result, you might want to give your tank some moderate-low illumination.

lighting for blueberry oscar


This species responds poorly to water temperature changes and ammonia concentration.

The ideal water temperature is between 74 and 81 ° F. Also, maintain a pH balance of 6 to 8 and a KH range of 5 to 20.

You can use a thermometer and a heater for the tank to maintain that temperature range.


Adding substrate and some live plants to your aquarium is a good idea to make it look lively.

Since Oscars like to dig, adding fine-grained substrates, like sand, to the tank’s foundation would be great.

These creatures are actively rearranging their surroundings and are highly disorganized.

Including some living plants and the usual boulders and bogwood is preferable.

Tank Mates

It isn’t possible to keep all species in one tank. Every species has a unique personality and compatibility.

Blueberry Oscars are relatively territorial and aggressive, so you must be careful when choosing tankmates for them.

Here is the list of compatible species for these hostile creatures:


Because these creatures are omnivores, feed them a meal high in protein. They consume tiny species of insects in nature.

Ensure that you provide them with an appropriate number of meals, such as shrimp, worms, tiny fish, or insects.

Another great option is to give these creatures some green veggies. You may shred them up and throw the bits in the aquarium.

If you want to learn more about their diet requirements, you can watch this video:

Health Concerns

Blueberry Oscars may have some diseases, including

  • Dropsy
  • Ich
  • Columnaris
  • Hexamitiasis
  • Exophthalmia


How Much Does A Blue Oscar Fish Cost?

These pets are not the cheapest due to their diversity and size. You may pay $8 – $100 for each.

What Fruit Can Oscar Fish Eat?

While these creatures prefer a protein-rich diet, you can feed them some fruits like bananas, oranges, cantaloupes, and watermelon.

How Many Types Of Oscar Fish Are There?

The creatures belong to the family of Cichlidae, a big family with around 3,000 species.

How Many Oscars Can Live Together?

Oscars may remain in groups of two or five. Due to their sociable nature, Oscars like to hang together in couples or small clusters.

How Many Oscars Can I Put In A 75 Gallon Tank?

A 75-gallon aquarium can house two Oscars.

Wrapping Up

Blueberry Oscar fish are among the most attractive species to keep in any aquarium. However, it’s hard to care for if you are not an experienced aquarist.

Having them in your house is lovely, but you must be extremely cautious to keep them relaxed and comfortable.

Hopefully, our guides will be helpful to you. Thanks for reading, and see you in the next post!