Hai Collection, Middle Volume
Radical: Fish (yú)
Character: Fu
Kangxi Strokes: 20
Page 1475, Entry 04
According to the Tang Rhyme (Tangyun) and the Collected Rhymes (Jiyun), the pronunciation is fu (rising tone).
The Explaining Graphs and Analyzing Characters (Shuowen Jiezi) defines it as a name for a sea fish.
The History of the Former Han (Qian Hanshu), Biography of Wang Mang, records the consumption of fu fish. The commentary by Shi Gu states that this is a sea fish.
The History of the Later Han (Hou Hanshu), Biography of Fu Long, records an audience at court where fu fish was presented. The commentary notes that the fu fish resembles a clam and attaches itself to stones on one side.
The Broad Record (Guangzhi) records that the fu fish has no scales but possesses a shell. It attaches to stones on one side and its surface has small, dense holes; some have seven, others have nine.
Additionally, according to the Expanded Rhymes (Guangyun), the pronunciation is bo (rising tone). The Collected Rhymes (Jiyun) and the Rhyme Collection (Yunhui) also provide the pronunciation as bo (rising tone). The meaning is the same. Another interpretation is that it refers to abalone (shijueming). Specimens with seven small holes on the side are of better quality.
Additionally, according to the Collected Rhymes (Jiyun), the pronunciation is pu (falling tone). The meaning is the same.