Silver Arowana, known for its strong adaptability, rapid growth, and fearlessness of humans, has a high ornamental value and is one of the ever-popular ornamental fish varieties in the aquarium market. The method of keeping Silver Arowana is very simple; you just need to understand the following five key points.
Environmental Requirements
Silver Arowana can survive in an environment with water temperatures ranging from 22 to 31 degrees Celsius, with the most suitable living water temperature being 24 to 28 degrees Celsius.

Dietary Habits
Silver Arowana is a carnivorous fish, mainly feeding on small fish, small shrimp, loaches, mealworms, superworms, cockroaches, crickets, and frogs.
- Feeding Frequency: It can be fed two to three times a day, and it is recommended to adopt a method of frequent small meals.
- Feeding Amount: Stop feeding when the fish’s belly is slightly swollen.
- Unfinished Bait: It should be removed as soon as possible to avoid polluting the water quality.
Water Quality Requirements
The pH value for Silver Arowana’s suitable living environment should be controlled between 5.8 and 7.0, with a preference for slightly acidic soft water.
Aquarium Selection and Breeding Density
Silver Arowana has a long body and grows rapidly, so the size of the aquarium should be appropriately increased when choosing one.
- Aquarium Size: It is recommended to choose an aquarium with a length of not less than 1.5 meters and a width of not less than 60 centimeters to provide enough swimming space.
- Aquarium Equipment: The aquarium should be equipped with a powerful filtration recirculation system to ensure good water quality and help the fish grow healthily.
- Breeding Density: In home aquariums, the breeding density should not be too high; aim for a larger aquarium with a lower fish density.
Water Quality Maintenance and Water Change
When feeding, change the water frequently and regularly clean the filter cotton.
- Water Change Amount: Only one-third or one-fourth of the water body can be replaced at a time; do not replace all the water at once.
- Water Temperature Matching: Ensure that the newly added water is consistent with the water temperature in the aquarium.
- Tap Water Treatment: When using tap water, it needs to be exposed to sunlight for three days in advance to remove chlorine from the water.
Silver Arowana has a strong aggressiveness and is not recommended to be kept with smaller fish species, as the smaller fish are easily eaten.
Original article by KPTer, if reproduced, please cite the source: https://www.kaipet.com/en/silver-arowana-care-tips-water-temperature-diet-aquarium-selection-guide
Comments(2)
Great guide! Regarding tap water, besides sunlight, are there any faster conditioners or treatments for chlorine removal you’d suggest?
@CriticX:Thanks for your kind words, CriticX! For faster chlorine removal than sunlight exposure, commercial aquarium water conditioners (dechlorinators) are an excellent option. They neutralize chlorine and chloramines instantly, making tap water safe for your arowana much more quickly. You can find them at most pet stores.