These are utterly amazing scroll through the slides on the source page. Here is a quote from Aquascaping: Aquarium meets terrarium in the Japanese-inspired design practice:
"In the display tanks of Aqua Forest Aquarium, there is no neon gravel, no miniature plastic castles, no sunken treasure boxes sprinkled with glitter. Instead, owners and brothers George and Steven Lo have created natural replicas of miniature underwater worlds: a branched piece of driftwood draped with dark green moss, a lush undulating fern-filled forest, a peaceful grassy meadow and, in a tiny 5 1/2 -gallon tank, a jewel box water-filled terrarium. Small fish and shrimp dot these environments, but like a flock of birds or grazing cattle in a landscape painting, they are only supporting characters. Here, the underwater plants get the attention."
These are truly beautiful, just like bonsai or ikebana.