
Duck-Lettuce
Ottelia alismoides
Hydrocharitaceae

Ottelia alismoides
Hydrocharitaceae
Lives wild in Australia, Bangladesh, Borneo, Cambodia, China, China Southeast, India, Indonesia, and 14 more countries.
Introduced to Egypt, Iraq, Italy, Sudan, Tanzania, and United States.
Ottelia alismoides, commonly known as duck lettuce, is a species of aquatic plant native to Asia and northern Australia. Due to habitat loss and deterioration, it is endangered in China and Japan, although it is an invasive weed in America. Its genome has also been sequenced, resulting in a 6.45 Gb assembly to help study its unusual carbon metabolism mechanisms and aid in genetic conservation.
Two aquariums from Southeast Asia: calm forest streams and peat swamps with soft, brown water, and fast mountain streams with cool, oxygen-rich water.
The home of rainbowfish: water, substrate, plants and light for rainbowfish, blue-eyes and peacock gudgeons, with a long aquarium and open water in the middle.
Light, nutrients and CO₂ in balance, low tech versus high tech, and how to read from the leaves what your plants are missing.