With a gaping mouth large enough to swallow a small child, this creature - believed to be a wolffish - would not look out of place in a science fiction film.
The massive catch was reeled in by Hirasaka Hiroshi, a fisherman who has made a career of landing and then eating unusual fish.
Caught off the coast of the island of Hokkaido, he said: 'It was worth flying to [Hokkaido] twice within three months. This guy is super cool,' theDaily Star reported.
Located just north of the mainland, Hirasaka said he landed the massive catch in the island's waters near Russia's coast.
Wolffish commonly live in the Pacific and Atlantic oceans. As deep sea dwellers, they feed on smallers creatures along the ocean floor.
The creature has developed a reputation due to its size and fearsome appearance and one type of the species featured on the Animal Planet series River Monsters.
Normally growing to about 1.2m in length, the wolffish Hirasaka caught measured close to two metres, The Sun reported.
The catch may also add substance to Japanese fishermen's concerns over the effects the Fukushima nuclear accident is having on local fish populations.