Why is it das Aquarium?
Aquarium ends in -ium, and nouns ending in -ium are neuter: in a German dictionary, 100% of them take das.
All nouns ending in -ium das
Meaning
[1] Container with water for keeping and observing aquatic animals and plants
[1] Behälter mit Wasser zur Haltung und Beobachtung von Wassertieren und -pflanzen[2] Building, exhibition with several aquariums [1]
[2] Gebäude, Ausstellung mit mehreren Aquarien[1]Examples
[1] He doesn't like television, he prefers to watch the fish in his aquarium for hours
[1] Fernsehen mag er nicht, er schaut lieber stundenlang den Fischen in seinem Aquarium zu.
[1] "I grazed the aquariums with a last glance"
[1] „Ich streifte die Aquarien mit einem letzten Blick.“
More source examples (1)
These dictionary examples can include historical and less common uses.
[2] We ran through the aquarium for hours and marveled at the colorful fish
[2] Wir liefen stundenlang durch das Aquarium und bestaunten die bunten Fische.
Declension
| 1 | Singular | Plural |
|---|---|---|
| Nominativ | das Aquarium | die Aquarien |
| Genitiv | des Aquariums | der Aquarien |
| Dativ | dem Aquarium | den Aquarien |
| Akkusativ | das Aquarium | die Aquarien |
Pronunciation
In context
![[1] Aquarium mit Buntbarschen](https://commons.wikimedia.org/wiki/File:African_Cichlid_Fish_Tank.jpg)
Dictionary entries include material from Wiktionary. Wiktionary