And fish is not for everyone. Firstly, they have a fairly high cost, secondly, they need an aquarium about 3-4 meters long, and thirdly – these fish are predators. They constantly need live food.
Now, with regard to more specific data on the content of Arowana:
Arovana is a large fish, the largest individual was caught by fishermen in the Amazon river basin. Its size was 152 cm. Although, in General, it rarely exceeds the length of 110 cm. the body of Arowana is covered with rigid scales with bony plates. The anal and dorsal fins start from the middle of the body and reach the tail. The pectoral fins are usually light at an early age. Over time, darken.
Arowan’s mouth is quite unusual, it seems to resemble a blade. They open their mouths wide enough that they can catch even large enough prey. In the natural environment, these fish hunt even small monkeys, carelessly come to the watering hole, and other small animals.
On the lower lips, the Aran has two antennae of black-blue or red-green colors. Eyes large, with dark pigmentation.
Size: there were cases when specimens were caught about half a meter, but usually they do not exceed 110 centimeters in captivity.
Species: Black Arowana (Osteoglossum ferreirai), Asian Arowana (scleropages Formosa), Silver Arowana (Scleropages jardini )
Habitat: South America, Amazon river basin, and its tributaries
Aquarium size: Juveniles cannot live in an aquarium less than 91 cm long (about 135 liters). Fish size of 30-40 cm should be located in aquariums with a length of 120-130 cm (210-270 liters). For a large individual, the aquarium will need a much larger size. Aquarium for Arowana should be no light, well planted with floating plants. Good water filtration, but not with too much flow.
Chemical composition of water: hardness 5-13°, pH 6, 0, temperature 24-30 °C.
Social behavior: Arowana are predators, they will eat smaller inhabitants of the aquarium. They are also aggressive towards relatives, so it is desirable to keep them separately. You can plant only large bottom fish.
Compatibility: can be contained with: Astronotus, Anostomus , Cichlasomines, Loricarids, Colossoma, Leporinus, Mylossoma, Pseudoplatystoma, Serrasalmus, Sorubim
Feeding: live fish, insects
Sex differences: males have a more pronounced anal fin
Breeding: there were few cases when they were able to breed in captivity. This requires an aquarium of more than 4000 liters. And the birds in nature usually spawn during floods. The cheeks of the males become bright pink color that attracts females. Females produce about 150-200 eggs, which are immediately sent to the male’s mouth for protection. After 2-3 weeks, fry hatch. After that, for 4-6 weeks they are still contained in the mouth of the male. He sometimes releases them “walk”, but at the slightest danger back pushes into his mouth.
These fish grow quite quickly-about 30 cm in the first year of life.
As a result, we can say that the Arowana is a hardy, predatory fish that require special nutrition from living foods. Also, they very quickly outgrow their aquarium. So maybe they should just be left in their natural habitat?