LEGO Fish Tank MOC

This LEGO fish tank MOC is a 21-piece mini aquarium with a clear tank, a light blue fish inside and a black frame on light gray feet. Behind the transparent panels, a green piece and an orange piece sit on the bottom like decorations, and the fish is placed above them so it seems to swim through the water. A white bent pipe rises from the black side section and holds a flat black top over the tank, and a round clear piece closes one end of the glass.

The build measures 5 x 2 studs and is 3.8 cm tall, so it is a relaxed project for beginners and younger builders. It is a nice example of how transparent parts can suggest a volume of water, and the black side section with its grille details reads like a pump or filter unit. The free step-by-step instructions cover it in 15 pages.

Set it next to the brick-built couch and coffee table from the furniture collection for a small living room scene, or keep it on a desk as an aquarium that never needs cleaning.