Frogfish
A fish that walks on its fins, looks exactly like sponge, and strikes faster than any other vertebrate
No photo available for Frogfish
Superpower
Frogfish strike at prey in 6 milliseconds — 0.006 seconds — the fastest predatory strike of any vertebrate. The strike generates a vacuum that pulls the prey into the mouth before the prey's nervous system can process what is happening. Simultaneously, frogfish use a lure (esca) that mimics the specific prey species most common in their environment — in some species mimicking the swimming motion of small fish with remarkable accuracy.
Overview
Frogfish (family Antennariidae) are masters of camouflage, matching sponges, corals, rocks, algae, and other fish species in color and texture — changing their appearance over days to weeks as they move between substrates. They don't swim in the normal sense: they walk on pectoral fins across the seafloor and use jet propulsion by expelling water through gill openings. They're almost never seen by divers who are immediately adjacent to them.
Found in
Tropical and subtropical coral reefs, rocky shores, seagrass beds, and shallow marine environments worldwide. Most species are highly site-specific, remaining in small areas for extended periods.
Things worth knowing
- 1
Frogfish can swallow prey up to twice their own body size — their stomach and mouth can expand dramatically, and they've been documented consuming fish that are almost as large as themselves.
- 2
The lure of some frogfish species is so specific to local prey that individuals in different geographic regions have measurably different lure shapes — evolving to mimic the prey available in each location.
- 3
Frogfish can change color over 2–8 weeks to match their surroundings — not instantly like cephalopods, but through a slow pigment-change process. They're photographed in bright orange, bright yellow, white, brown, and black depending on substrate.
- 4
Frogfish walk on three limbs at once — using the two pectoral fins and the pelvic fin as a tripod, moving in a gait more resembling a tetrapod than a fish.
- 5
Male frogfish perform an elaborate courtship that ends with the female expelling a raft of up to 180,000 eggs enclosed in a gelatinous float called a 'veil' — the male fertilizes it and it drifts freely in the current.