Chaetomorpha algae; Chaeto
Refers to green algae of the genus Chaetomorpha, often used in aquariums for nutrient export.
Chaetomorpha is often used for filtration in saltwater tanks.
nostoc
Refers to cyanobacteria of the genus Nostoc, sometimes called 'star jelly'. See also 念珠藻.
See also: ネンジュモ
Some species of nostoc are edible.
Katakana spelling is common for this organism name.
Kanji spelling is rare; the word is usually written in kana.
From 数珠 (juzu, 'rosary') + 藻 (mo, 'algae'), referring to the beaded appearance of the filaments.