‘鱼缸’ (yú gāng) literally combines ‘鱼’ (yú), meaning ‘fish’, and ‘缸’ (gāng), meaning ‘large earthenware jar or tank’. Together, they refer to a transparent container—typically made of glass or acrylic—used to house live fish and aquatic plants. It’s a common household item in China, often placed in living rooms or balconies for decoration and relaxation.

Unlike the broader term ‘水族箱’ (shuǐzú xiāng), which emphasizes the aquarium’s role as a miniature aquatic ecosystem, ‘鱼缸’ is more colloquial and everyday, focusing on function and visibility. It implies a smaller, self-contained unit—often without complex filtration or lighting systems—and is frequently used in both literal contexts (e.g., pet care) and figurative expressions (e.g., ‘像鱼缸里的鱼’ meaning ‘like a fish in a bowl’, suggesting limited perspective or freedom).