The plainfin grenadier (''Ventrifossa divergens'') is a species of

rattail Grenadiers or rattails are generally large, brown to black gadiform marine fish of the subfamily Macrourinae, the largest subfamily of the family Macrouridae. Found at great depths from the Arctic to Antarctic, members of this subfamily are am ...

. This is a deep-water fish found at depths of up to 772 m. It has a wide distribution in the Indian and western Pacific Oceans. This species reaches a length of 30 cm. As suggested by the common name, it has a uniformly dark first dorsal fin, lacking the contrasting blotch seen in many species in the genus. It also has a black margin to its snout.

References

Macrouridae Taxa named by Charles Henry Gilbert Taxa named by Carl Leavitt Hubbs Fish described in 1920 {{Gadiformes-stub