Blobfish live in depths between 600-1200 m (2000-3900 ft) where the pressure is several dozen times higher than sea level, which will likely make gas bladders inefficient for maintenance the buoyancy. Instead, the contents of blobfish is primarily a gelatinous mass with a density slightly less than water; This allows the fish to float above the sea floor without expending energy on swimming. His relative lack of muscle is not a disadvantage as it primarily swallows edible matter that floats in front of it. Blobfish eat invertebrates such as crabs and sea pens.
Blobfish can be caught by bottom trawling with nets as bycatch. Like trawling in waters off Australia could threaten blobfish to what may be its only habitat.The blobfish is currently facing extinction due to deep-sea fishing or bottom trawling.