Datasheet Arowana
German name:
Arowana
Scientific name:
Osteoglossum bicirrhosum
Origin:
Area of the Amazon, Araguaia and Rupununi in southern Guyana and in the border area between Brazil and French Guiana
Size:
Body length 90 to 120 cm
Aquarium
Length:
Length from 4 m wide and 1.5 m wide
Contents:
From 4500 liters
water values
Temperature:
24°- 30° C
pH:
6 – 7.5
GH:
2° to 15° dH
Behave
Area:
upper and middle pelvic area
Lining:
carnivore, prefer live foodcrayfish, shrimp, frozen food
Behave:
aggressive predatory fishnimble and agile, good jumpercan ingest atmospheric air into its swim bladder
Number:
Single fish or in pairs
Difficulty level:
Advanced husbandry, advanced breeding
Posture recommendation
User:Qwertzy2, Osteoglossum bicirrhosum, CC BY-SA 3.0
These interesting and impressive animals are too big for normal living room aquariums. As individual animals in large showcases the active bone tongues (Osteoglossidae) impress with their mobility. You can turn almost on the spot. To catch frogs or insects, They shoot up to 2 meters out of the water. So that they don’t land on the floor, you have to Pelvis must be covered in a stable manner become. In nature, the Arowanas prefer to stay in the backwaters of the rivers, where they are densely overgrown.
What is striking about the fish are the particularly large scales that cover the body. Dorsal and anal fins extend to the caudal fin.
They are also known as Aruanã, Arahuana or Silver Fork Beard. Aquarists affectionately refer to the fish as King of the Aquarium.
gender differences
Adult Males have a significantly elongated lower jaw. Their body is more delicate than that of females and their anal fin is longer.
For adults Females have a rounder belly and a more massive body.
breed
The Breeding in the aquarium is possible, although not entirely easy. If it is to succeed, the pool must be large enough.
A Arowana female spawns once a year. A few days before mating, males and females circle each other and shake their heads. During mating, both stand side by side over a small pit in the sand. The female lays the approx. 1.5 cm large eggs in this pit.
Arowanas are mouthbrooder. The male takes the eggs from the pit in his mouth (his gular pouch). The Larvae hatch after 50 to 60 days, they are then already 10 cm long. The young animals are not choosy when it comes to food. They devour everything they get.
The male does not eat during the breeding season and is accordingly weakened. He needs two to three months of rest before he recovers.
socialization
Arowanas are extremely aggressive, even to conspecifics. It is recommended to keep them alone. If there is enough space, a pair or a small group can be kept in a species tank. Smaller fish are eaten.
A socialization is exclusively with calm, larger fish possible. You can choose from large catfish, larger cichlids such as discus fish, adult clown loaches or giant guaramies if the water parameters are suitable.