Aquarium
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An aquarium is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, a
A freshwater aquarium with plants and various tropical fish
The underwater tunnel in the Sea Life London aquarium
Cat and fishbowl, by Isoda Koryusai. Original c. 1775.
Goldfish in a glass: portrait of Therese Krones, 1824
Fish
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A fish is an aquatic, anamniotic, gill-bearing vertebrate animal with a tough cranium to protect the brain, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the
Aquarium
…a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquatic reptiles, such as turtles, and aquatic plants. The term aquarium, coined by English naturalist Philip Henry Gosse…
Balantiocheilos melanopterus Karlsruhe Zoo 02
Dunkleosteus was a giant Devonian armoured placoderm, c. 400 mya.
Largest: whale shark
Smallest: e.g. Paedocypris progenetica