A person who maintains aquariums, specializes in caring for aquatic animals and plants, or is an expert in aquatic life.
From Latin 'aqua' (water) plus the English suffix '-ist' (one who practices), creating a term for someone specialized in aquarium keeping and management.
The term 'aquarist' is relatively modern—it only became widespread in the 1800s when keeping tropical fish went from an elite hobby to something ordinary people could do at home!
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