Arowanas are majestic and powerful fish that make an eye-catching addition to any large aquarium. However, choosing the right tankmates for an Arowana can be challenging due to their territorial nature and potential for aggression. In this guide, we’ll discuss the best tankmates for Arowana and how to prevent aggression to ensure a peaceful aquarium environment.
Understanding Arowana Behavior
Arowanas are known for their:
Territorial nature – They can be aggressive toward smaller or similarly dominant fish.
Large size – They can grow up to 3 feet, requiring a spacious tank of at least 250 gallons.
Predatory instincts – They may eat smaller fish that fit into their mouth.
Top-level swimming – They generally swim near the surface, so tankmates should occupy different levels of the tank.
Best Tankmates for Arowana
The best tankmates for Arowana should be large, robust, and non-aggressive. Here are some top choices:
1. Silver Dollar Fish
Peaceful schooling fish that stay mid-level.
Fast swimmers, making them less likely to be attacked.
Prefer a group of 5 or more.
2. Bichirs
Bottom dwellers that avoid direct interaction with Arowanas.
Thick-bodied, making them less likely to be seen as prey.
3. Oscar Fish
Large and hardy enough to hold their own.
Avoid keeping multiple Oscars as they may become territorial.
4. Datnoids (Tiger Fish)
Slow-growing but strong fish that can co-exist with Arowanas.
Avoid keeping smaller ones as they might be eaten.
5. Plecos (Common or Sailfin)
Bottom dwellers that help clean algae.
Avoid aggressive pleco species that may nip at the Arowana.
6. Clown Knifefish
Peaceful, nocturnal fish that stay in the bottom or mid-levels.
Need large tank space due to their size.
7. Giant Gourami
Large, slow-moving, and generally peaceful.
Avoid aggressive individuals to prevent fights.
8. Parrot Fish
Semi-aggressive but not a direct threat to Arowanas.
Their bright colors can enhance tank aesthetics.
9. Stingrays
Bottom dwellers that require a spacious tank.
Ensure the substrate is soft to prevent injuries.
How to Prevent Aggression in an Arowana Tank
1. Provide a Large Tank
Arowanas need at least 250 gallons, and a bigger tank reduces territorial behavior.
2. Introduce Tankmates at the Right Time
Add tankmates when the Arowana is young to encourage tolerance.
Avoid adding smaller fish that might become prey.
3. Feed Adequately
Underfed Arowanas become aggressive and may attack tankmates.
Provide a high-protein diet with a mix of pellets, insects, and frozen food.
4. Ensure Proper Hiding Spaces
Driftwood, caves, and plants provide hiding spots for smaller or bottom-dwelling fish.
5. Monitor Tankmate Behavior
Observe interactions and remove any aggressive fish.
Avoid keeping multiple aggressive species together.
6. Avoid Overcrowding
Too many fish can increase stress and aggression.
Maintain a balanced number of fish in the aquarium.
7. Use Tank Dividers if Necessary
In extreme cases, temporarily separate fish using acrylic dividers.
Where to Buy Arowana and Tankmates in Pune?
At Blessings Aquarium, Pune’s best aquarium shop, we offer a wide range of Arowana-friendly tankmates, premium fish food, and custom aquariums. Visit us for expert advice and top-quality fishkeeping essentials.
Finding the best tankmates for Arowana requires careful selection to prevent aggression and ensure harmony in your aquarium. By choosing the right fish, providing ample space, and maintaining a stress-free environment, you can successfully keep an Arowana with compatible species.
For expert Arowana care tips and premium tankmates, visit Blessings Aquarium in Pune today!
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