Neophrynichthys marcidus McCulloch, 1926 Psychrolutes marcidus, the smooth-head blobfish,[1] also known simply as blobfish,[1] is a deep-sea fish of the family Psychrolutidae.

[2] Blobfish are typically shorter than 30 cm (12 in).

They live at depths between 600 and 1,200 m (2,000 and 3,900 ft), where the pressure is 60 to 120 times greater than that at sea level, which would likely make gas bladders inefficient for maintaining buoyancy.

[2] Instead, the flesh of the blobfish is primarily a gelatinous mass with a density slightly less than that of water; this allows the fish to float above the sea floor without expending energy on swimming.

The blobfish has a relative lack of muscle, but this is not a disadvantage, as its main food source is edible matter that floats in front of it, such as deep-ocean crustaceans.