The specimen Fedortsov placed at the edge of his boat looked like a bloated, slimy gray blob.

Are you chopping aliens heads for views?

I always knew they were somewhere around, someone else commented.

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Smooth lumpsuckers have a high water content in their tissues and round, bulbous bodies.

Image credits:rfedortsov_official_account

But what about the viral fishs extremely swollen appearance?

The high water content in its body does not explain its uniquely bloated look, the expert said.

Deep-sea fisherman in orange gear handling nets on a boat, related to “alien” fish discovery.

When their swim bladder expands rapidly, fish can often puff up unnaturally and look very strange.

However, this is not the case for this fish becauseAptocyclus ventricosusdoes not have a swim bladder.

There is no swim bladder to puff up!

Deep-sea fisherman holding an unusual “alien” fish with dark, mottled skin near the ocean.

I assume this is just how a large, freshly caughtAptocyclus ventricosuslooks, which is pretty cool to me!

He suggests that the fishs unusually swollen appearance may be due to something it ate.

They can stick themselves to rocks with this sucking disc and stay in place in rough surf.

Deep-sea fisherman discovers unusual “alien” fish on rusty boat surface.

He said: The smaller male protects the eggs until they hatch.

Check out the results:

Deep-sea view with sunlight filtering through water, illustrating alien fish habitat.

Map showing locations where deep-sea fishermen found unusual fish.

Deep-sea fisherman discovers unusual “alien” fish on sandy surface.

Deep-sea “alien” fish specimen on display in a laboratory setting, surrounded by jars.

Tweet response about an “alien” fish, reads “put it back,” dated Feb 26, 2025.

Tweet about “alien” fish, mentioning missed calls from CIA.

Tweet about an “alien” fish by deep-sea fisherman, saying “Throw Yakub back! Leave my daddy alone!

Comment on alien fish by deep-sea fisherman tweet; user dislikes the catch.

Screenshot of a tweet reacting to an “alien” fish discovery by a deep-sea fisherman.

Tweet by Shane Donovan joking about an alien fish, mentioning “proof of the underwater aliens.

Tweet reaction to a deep-sea fisherman’s “alien” fish with a comment about life being stranger than fiction.

Tweet reaction to alien fish discovery by deep-sea fisherman: “WTF is even that?!

Tweet about deep-sea fisherman encountering ‘alien’ fish in the ocean.

Tweet expressing concern about the third deep-sea fish surfacing in recent weeks; discussion on alien fish.

Tweet response about deep-sea fisherman and “alien” fish, expressing hesitance to go far into the water.

Tweet about ocean exploration versus Mars, highlighting unknowns of deep-sea fish.

Social media post by Vandarte about an “alien” fish discovery, stating: “We are not alone.