red carp; golden carp
Refers to an ornamental variety of common carp (Cyprinus carpio) with red or golden coloration, often kept in ponds.
Three red carp are swimming in the garden pond.
Standard kanji spelling for this ornamental carp.
Kana spelling is common in everyday writing, especially when the kanji is not essential.
Compound of 緋 (hi, 'scarlet') and 鯉 (koi, 'carp'). The reading ひごい is a straightforward combination of the two characters' readings.