It is considered to be difficult to have in an aquarium.

"Three years of living like a fish in an aquarium is enough."

Under good conditions they can live in an aquarium for around 5 years.

There were others behind him, and they all looked like fish in an aquarium.

Cars and people moved around us like fish in an aquarium.

When the two were placed in an aquarium the association became clear.

They are most comfortable in an aquarium with lower light levels.

She nodded, looking through me, as if I were the glass in an aquarium.

Steven gets an idea for a movie set in an aquarium.

Equally they can both be very interesting kept in a small aquarium.