How to Stop Oscar Fish Aggression?

Oscars battle in different ways, they may push each other around and will regularly jump at one another. Another form of aggression in Oscars is”jaw” or “lip” locking. This is the point at which they confront each other head-on and attempt and seize each other’s mouths.

How to stop Oscar Fish aggression? Even if the Oscars initially hurt each other, don’t be excessively rushed and part them up straight away. Watch their conduct and see what they do in the middle of these episodes of savagery.

Oscar Fish Fighting – Stop it, Mating? Aggression (Video)

 If they are decent and amicable and mostly stay civil with one another, then you honestly shouldn’t have anything to stress over. If it is evident that both fish can’t stand each other then you might proceed to isolate both fish.

Oscars have been known to kill other Oscars in the tank. It’s anything but a typical event, yet it can occur. Likewise, Oscars that have lived respectively for quite a while have also been known to begin fighting all of a sudden.

More about Oscar fish’s aggression

Lip locking, pursuing each other around the tank, and different types of harsh conduct can regularly be a pre-rearing custom. Individuals frequently get exceptionally energized when they see their Oscars doing this.

The only way you can check whether you have a reproducing pair or not is by observing eggs being laid and the male fertilizing them. When you have watched your Oscars doing this two or multiple times, you will realize what signs to search for.

You will understand that when your Oscars lock jaws, they are not doing it because of hatred. It is worth referring to that at times even a rearing pair of Oscars may get irritated with one another and have a little fight.

Notwithstanding, this doesn’t typically end in actual damage. There might be a couple of cuts and wounds however, if you keep your water in excellent condition, these will mend up quite soon.

In the wild, fish frequently show territorial nature. If you are encountering hostility where one Oscar is picking and harassing another, it likely could be a case of Oscars fighting over their territory.

In some instances, revising things in the tank, i.e., moving decorations, wood, rocks can help decrease aggression because nature can have a positive effect on these fish.

This may allow the other fish to find a territory for themselves instead of getting singled out wherever they are in the tank.

Picking the Right Fish

Although you can keep other fish with Oscars, yet it is important to understand that if a fish can fit into an Oscar’s mouth; it will!

Oscar fish will live with most different cichlids that are like them in size. In any case, the best fish to put in with them is the silver dollar fish. Silver dollars are vast, speedy, and even appreciate tidying up after the Oscar has left a wreck after a feast.

Try not to put little to medium catfish in with an Oscar fish. If it endeavors to eat them, their spiny bones will get caught in its, and the end murders him.

Finding the Right Tank Size

You should guarantee that your tank is sufficiently large for various fish.

The proposed tank measure for an Oscar fish without any other fish is 55 gallons. However, it will probably outgrow this size when it has reached its full length of 12 inches. If you keep other fish with Oscars, you should definitely buy a tank that can hold over 70 gallons of water.

Feed Well

You have to give your Oscar a very adjusted eating routine. In nature, an Oscar will eat other fish, bugs, and worms, however, it will likewise eat products of the soil. Supplement any food with superb fish pellets. As your Oscar develops to its full length, you should provide it with foods like crude shrimp.

The Last Resort

Oscar fish can be difficult to foresee. If you see your Oscar fish acting excessively aggressive to the others, expel it instantly from the tank and put it in a different aquarium. For the most part, it will battle fish for territory and nourishment.

Oscar Fish Quality

Oscars eat a considerable amount of food and deliver a great deal of waste, so filtration should be high-powered.

While the exact technique for filtration doesn’t make a difference excessively, Oscars can be damaging toward a few types of filters.

In most respects, Oscars are not lazy. A stylistic layout ought to be kept to a minimum because these fish will move about throughout the tank, disrupting your decorations.

All you truly need to add is sufficient rock to cover the glass in addition to a couple of bits of bogwood to make the sorts of obscure niches and corners that Oscars appreciate. Some Oscar guardians include plastic plants, yet the Oscars needn’t bother with them.


With regards to picking tank mates for Oscars, a specific level of meticulousness is required. The perfect circumstance indeed is to keep only Oscars. Yet, if you want to keep more fish, go with a breed which is quite large.

Silver dollars, tinfoil spikes, silver sharks and other medium-to-vast tutoring fish have been utilized effectively throughout the years.

The trap is to guarantee such tank mates are sufficiently huge not to be seen as food. The hours and days promptly after the presentation are the least secure, when the occupant Oscar is well on the way to see them as live food. This is what Oscars are all about.

Are Oscar Fish Aggressive by Nature?

Even though an Oscar fish can be aggressive, it will impart his tank to other fish. Specifically, it is suited to live around his very own size who are neither excessively latent nor excessively forceful.

In the same way as other species, each Oscar is unique and some might be more aggressive or passive than others.

Related Questions

Which fish can live with Oscars? Oscar fish tank mates might be just extensive or particularly sharp fish – panther cichlid, green fear, Jack Dempsey cichlid and different cichlids, expansive heavily clad sailfin pleco and a basic pleco.

How often should you feed Oscar fish? Feed regularly. You will need to bolster your Oscar’s diet every few hours. Pick the correct food. There are particular nourishments available intended to influence your Oscar to become bigger. Tidy up after Oscars. With the expanded food allow there will undoubtedly be extra yield.

What should be the temperature of an Oscar fish tank? Get a sufficiently large tank. Before owning any fish, you need a home for it. Keep the water warm and maintain a neutral pH. It is proposed to keep the water temperature somewhere in the range of 74- and 81-degrees Fahrenheit. Change 10-15% of the water week after week. Oscars are muddled fish.

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Nadine Oraby

My name is Nadine; I am a passionate writer and a pet lover. People usually call me by the nickname “Joy” because they think that I am a positive and joyful person who is a child at heart. My love for animals triggered me to create this blog. Articles are written by vets, pet experts, and me. Thanks for visiting. Your friend, Nadine!

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