Also known as Hemianthus callitrichoides "Cuba". Dwarf Baby Tears is one of the smallest aquarium plants in the world, and creeps over the bottom with millimetre-sized round leaves. 
Plant in small clumps a few centimetres apart and it will spread rapidly and cover the bottom like a carpet
 
Aquarium plant from tissue culture in closed cup. Grown by Tropica Aquarium Plants.
 
Light: High
Co2: Medium
Growth: High
Height: 2 - 5 cm
Difficulty: Advanced
Position: Foreground/Carpeting