Agonomalus proboscidalis is a fish in the family Agonidae.

[2] It was described by Achille Valenciennes in 1858, originally under the genus Aspidophorus (now Agonus).

[3] It is a marine, polar water-dwelling fish which is known from the northwestern Pacific Ocean, including northern Japan, the Sea of Japan, and the Sea of Okhotsk.

Males can reach a maximum total length of 20 centimetres (7.9 in).

[2] Agonomalus proboscidalis is a commercial aquarium fish.