Golden Oscar Fish Species Profile – How to Care Golden Oscar Fish

The Golden Oscar Fish is also known as the Midas Cichlid, which was named because of its “golden” color. As juveniles, this species has bright yellow bodies with bright orange markings. As adults, they become solid dark brown to gray in color without any bright colors on their bodies. Despite how it looks, adult Golden Oscars are actually very colorful. You can see their bright colors when they open their mouths because their gills, fins, and lips are bright yellow. They also have black dots present on both sides of their bodies. The Golden Oscar has a lifespan of up to 10 years if taken care of properly in the right tank size.

Golden Oscar Fish Characteristics

Golden oscar fish

The Golden Oscar Fish shares the same characteristics as other fish in its genus, Astronotus. In general, fish from this genus are known for being very large and aggressive. They also have a flattened body shape with a broad head, which is why they are often called “Oscar.” These fish have been known to grow up to 24 inches in length. The Golden Oscar is no exception to this rule, which means you have to have a pretty large tank if you want to keep them!

Golden Oscar Fish Origin

The Golden Oscar Fish comes from South America. They are found in fresh water rivers and lakes located in the lowlands of the Amazon River, between Guyana and Argentina.

Fish from this genus were first discovered in the Amazon River by ichthyologists (fish specialists). They were then introduced to aquarists and became very popular.

Golden Oscar Fish Size

This species of fish starts out as small fry. They usually only grow around 3 inches long when they are 1 year old, but can continue growing for 5 more years after that! When fully grown, the average length is about 21-24 inches . The biggest Golden Oscars ever recorded were 30 inches long.

Golden Oscar Fish PH

The ideal pH for Golden Oscar Fish is between 6.0 to 7.0. If the pH level is too low or high, it can make them very unhealthy and even cause death . This is why it’s important to have a good understanding of the tank’s water chemistry before introducing any fish into your aquarium, especially Oscar fish!

Golden Oscar Fish Colors and Markings

When Golden Oscar Fish are juveniles, they ha ve bright yellow bodies with orange markings.

You may also notice black dot-like markings on both sides of their body. These dots become more prominent as the fish matures into adulthood. Adult males will turn dark brown to gray without any bright colors present on their body. Females will also become darker in color, but their spots and other bright colors will remain.

Golden Oscar Fish Aquariums

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Because of how large and aggressive these fish can get, you need to make sure that they are kept in a tank that is at least 55 gallons . If the tank isn’t big enough, the bigger specimens have been known to break glass, which can be quite dangerous for your fish!

Golden Oscar Fish Tankmates

Golden Oscar Fish are very aggressive and shouldn’t be kept with other types of fish. They will eat any slower or smaller fish that they can fit into their mouths. This means that you should not keep them with marine life either .

They prefer to be the only large fish in their tank. With that being said, they can be housed with other types of cichlids , but only if the other species are large enough to not make any feel threatened. You should also have a lot of rock ornaments and plants in the aquarium so that they have hiding places from each other when they are getting aggressive.

Golden Oscar Fish Care

Golden Oscar Fish need to be kept in a tank that is appropriately sized for their needs. These fish grow very quickly and require at least 55 gallons of water . With that being said, you should always check out the specific species’ care requirements before adding any new pets to your aquarium.

The Golden Oscar Fish is a very hearty fish and can adapt to almost any water conditions. However, there are still some water parameters that you should always pay attention to in an Oscar tank: Temperature (75-86ยฐ F), pH (6.0-7.5), and Specific Gravity (1.020-1.025). The Golden Oscar is a carnivorous species, which means that it needs to be fed mostly animal-based foods. In the wild, Golden Oscars feed on insect larvae and other small fish. As pets, they need to be fed regular flakes or pellets . Feed them at least 2 times a day and only give them as much food as they can eat within 5 minutes. This will help keep the water quality up in your tank!

Golden Oscar Fish Lifespan

The average lifespan of an Golden Oscar Fish is around 10-12 years in the wild , but captive specimens have been known to live much longer . Most die at a young age due to poor care or being kept in inappropriate environments. The oldest Golden Oscar Fish on record lived to be 19 years old. So with proper care and a suitable environment, they should easily be able to live up to their full potential.

Golden Oscar Fish Diet and Feeding

Since these fish are carnivorous, you need to make sure that they are getting the appropriate diet . In the wild, Golden Oscars feed on insect larvae and small fish. As pets, they need to be fed regular flakes or pellets that are specifically made for cichlids . You should feed them at least 2 times a day and only give them as much food as they can eat within 5 minutes. This will help keep the water quality up in your tank!

Golden Oscar Fish Differences

With the correct amount of care, both male and female Oscars can easily live up to their full potential. However, not all specimens grow at the same rate . A good rule of thumb is that female Oscar Fish mature faster than males . This means that females will start showing their spots and other colors at a younger age than males will . However, both male and female specimens will be able to live 10-12 years on average.

Golden Oscar Fish Breeding

Breeding Golden Oscars is not very difficult if you know what you’re doing. All it takes is a large enough tank, regular feedings of live food, and the right water conditions . Make sure that the breeding tank has a bare bottom with no gravel. This helps the eggs stay put so that they don’t get eaten by their parents . Also, make sure there are plenty of carefully placed rocks and plastic plants to give the female places to hide her eggs.

After spawning, both parents will protect their newly laid eggs for up to 3 weeks before they hatch. During this time, the parents will need to be constantly fed live foods . After around 3 weeks, most of the eggs should have hatched into fry . These fish are very tiny and require special care. You should feed them infusoria until they are big enough to eat microworms or baby brine shrimp .

Golden Oscar Fish Differences

When juvenile specimens are first born, they are completely black with white spots on some parts of their body . This means that it is impossible to tell if the fish is a male or female until they reach maturity. Juveniles also have rounder bodies compared to adults which gives them more of a “puffer fish” appearance. They will also eat anything that they can fit into their mouths .

Golden Oscar Fish Tankmates

Although Oscar Fish are known for being aggressive, juvenile specimens can be kept with other fish species as long as they are of a small enough size . However, if your specimen is over 3 inches in length and/or has fully developed spot patterns, it is best to keep them as a solitary pet .

When they reach maturity, Oscars can be kept with other medium sized cichlids such as Severums and Jack Dempseys. However, just like all cichlid fish species, it is not recommended that you house more than one male in the same tank . This is because males will fight over territory.


In conclusion, the Golden Oscar is a unique and beautiful fish species that really stands out from other cichlids. With proper care and attention to detail, this fish can easily live up to its full potential of 10-12 years . It’s important to always research a new type of pet before deciding on taking one home.