Java fern
A popular aquatic fern (Microsorum pteropus) often used in aquariums.
I planted a Java fern in the aquarium.
Standard katakana spelling for this plant name; usually written in kana.
Kanji spelling is rare and mainly found in botanical contexts; the word is usually written in kana.
From 三つ手, describing the fronds’ three-part or three-lobed form, and ヘラシダ, the name of a related fern.