Nitella gracilis is native to the British Isles and North America. It is a plant much more suited to cold water, bat it is an adaptable plant that soon acclimatises to the tropical aquarium.
It is a delicate, pretty plant that has no roots, nevertheless, it grows rapidly in an aquarium that’s well illuminated, and it is a great oxygenator. It’s much better suited to aquariums containing little fish, but it also provides an outstanding refuge plant if grown in reasonably dense clumps. It is also helpful when breeding egg-layers, as it could be laid flat along the bottom of the aquarium and retained with little round stones to supply a natural egg trap, and protection for fry when they hatch.