Author: Johnson, 1864
FBname: Black swallower
Comments: Mesopelagic to bathypelagic species (Ref. 6944, 28429).  Specimens larger than 4.5 cm are more frequently collected between 730 and 1900 m with shallowest record being 150 m, the deepest 3900 m (mean 1390 m).  Juveniles are found in shallower water, from 0 to 1,050 m (mean 542 m), with the smallest specimens (>10.0 mm) collected nearest to the surface (Ref. 82429).  Feed on  whole fish, often of individuals longer than themselves (Ref. 9686).  Most specimens were taken at depths greater than 750 m (Ref. 6649).