What is "beardfish"

n. Any of various deep-sea fish, of the family ''Polymixiidae'', that have a pair of long hyoid barbels

The beardfishes consist of a single extant genus (Polymixia) in a small family (Polymixiidae) of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. At present they are classified in their own order Polymixiiformes, but as Nelson says, "few groups have been shifted back and forth as frequently as this one". For instance, they have previously been classified as belonging to the Beryciformes. They are of little economic importance.

They are found in tropical and subtropical waters of the Atlantic, Indian and western Pacific Ocean. They are bottom-dwelling fish, found down to about depth. Most are relatively small fish, although one species is over in length.

Beardfish was a Swedish progressive rock band formed in 2001. Their style resembles progressive rock bands from the 1970s, such as Yes and Genesis. The band's most prolific line-up consisted of founding members vocalist/keyboardist Rikard Sjöblom and guitarist David Zackrisson, along with longtime drummer Magnus Östgren and bassist Robert Hansen; who joined the band in 2001 and 2002 respectively; this line-up existed from 2003 (following the departure of keyboardist Stefan Aronsson) until the band's dissolution in 2016.