Sentence:  The <WSD>jeju</WSD> ("Hoplerythrinus unitaeniatus") is a facultative air-breathing fish that utilizes a modified swim bladder as an ... 
Meaning of the word marked with <WSD> tags:  A South American (Amazonian) erythrinid fish, "Hoplerythrinus unitaeniatus" (formerly sometimes "Erythrinus unitaeniatus").