Lemna minor
Scientific name: Lemna minor
Family: Araceae
Usual maximum size in aquariums: 0 - 2 cm (0 - 0.79 inch)
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Recommended pH range for the species: 5.1 - 6.7
Recommended water hardness (dGH): 4 - 30°N (71.43 - 535.71ppm)
0°C 32°F30°C 86°F
Recommended temperature: 17 - 26 °C (62.6 - 78.8°F)
Reproduction of the plant: Divisions
Origin (in the wild): Everywhere
How fast these plants grow: Fast
Recommended substrate: Without substrate
Demands on lighting: Bright
Ideal placement in a fish tank: Floating
Common Name
Common Duckweed
Origin
This plant is universally found all over the planet.
Propagation
This plant will propagate itself by division. This means that once the plant has developed a number of leaves it will divide to produce two plants. This can happen at a fast rate if the conditions are right so make sure that it does not cover all of the surface area of the aquarium, this will prevent a lot of the lighting from reaching the plants below.
Difficulty
Easy
Short Description
In some areas this plant is considered to be a pest due to its rapid growth rate. It loves still waters and in some areas when the temperature drops low outside, it will sink in the ponds and only rise again when the temperature rises. This is an important food source for many birds and animals as its leaves are high in nutrients.This plant is very helpful for fish which build bubble nests. It helps to keep the water surface safe, so that the nest will not be destroyed by the water current, the eggs will be able to stay at the top and it also helps the fry to swim at the top levels of your aquarium where they can hide from hungry fishes.
Pictures
One was provided by Oliver and another one was bought from jjphoto.dk.