Fish swam in tank, carefree.

Meaning: The fish was swimming around in its tank, happy and relaxed.

Choice of Words: Swam means to move through water by moving your body and fins. Tank is a container for holding water or other liquids. Carefree means without any worries or concerns.

Alternative Expressions

The fish were swimming in the tank, without a care in the world.

Meaning: This sentence describes fish swimming in a tank without any worries or concerns.

Choice of Words: The word "were" is used to indicate that the fish are currently swimming. "Swimming" is a verb that describes the movement of the fish through the water. "Tank" is a container that holds water and is used to keep fish. "Without a care in the world" means that the fish are not worried or stressed.

The fish glided through the water in their tank, oblivious to the world around them.

Meaning: This sentence describes fish swimming in a tank without any awareness or concern for the world around them.

Choice of Words: The word "glided" is used to describe the smooth and effortless movement of the fish through the water. "Tank" is a container that holds water and is used to keep fish. "Oblivious" means unaware or unconcerned about something.

Related Expressions