Given:
Length of aquarium, L = 6 meters
Width, W = 4 meters
Height, H = 8 meters
Let's find the volume of the aquarium.
Let's take the shape of the aquarium to be a rectangular prism.
To find the volume, apply the formula:

Where:
L = 6 m
W = 4 m
H = 8 m
Plug in the values in the formula and solve for the volume, V.
Thus, we have:

Therefore, the volume of the aquarium is 192 cubic meters.
ANSWER:
192 m³