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Scarlet Frogfish

The scarlet frogfish is a master of disguise—it can change its color and texture to match its surroundings and uses a built-in “fishing rod” to lure prey right to its mouth.

 

The scarlet frogfish, also known as the freckled frogfish, is a small, reef-dwelling fish found in coral reefs and lagoons in the Indo-Pacific waters as well as the Central Eastern Pacific, from East Africa to the Desventuradas Islands off the coast of Chile. It can appear a variety of colors, including yellow, red, or tan, altering its color to blend in with rocks and sponges along the ocean floor. A relatively small fish, growing up to 9.1 centimeters (3.6 inches), it often uses modified fins to “walk” along the ocean floor rather than swimming.

Frogfishes are ambush predators equipped with a specialized lure, which is a modified dorsal spine. They sit, motionless except for their wriggling lures waiting for unsuspecting fish to draw near. When prey comes close enough, frogfishes can strike with incredible speed—opening their mouth and sucking down prey in fractions of a second. Frogfish are such voracious predators, some can even consume prey longer than their own body!

 

 

Scarlet frogfish are not known to face any major direct threats at this time and are classified as Least Concern on the IUCN Red List. However, more information is needed about how climate change may impact them in the long term, as well as if diver tourism or collection for the aquarium trade may impact their population.

 

 

More research about the scarlet frogfish would provide valuable insights about their population and its trends. However, this fish is known to be found in some marine protected areas, which might offer the species some safeguards from potential threats. Oceana campaigns to create more marine protected areas throughout the world’s oceans, helping ocean wildlife like the frogfish thrive.

 

 

  • Dickson BV and Pierce SE (2019) Early Vertebrate Evolution: How (and why) fins turn into limbs: insights from anglerfish. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 109: 87–103. doi:10.1017/S1755691018000415 
  • FishBase 
  • Grobecker DB and Pietsch TW (1979) High-Speed Cinematographic Evidence for Ultrafast Feeding in Antennariid Anglerfishes. Science 205(4411): 1161-1162. https://doi.org/10.1126/science.205.4411.1161 
  • IUCN Red List 
  • Maile AJ, Smith WL and Davis MP (2025) A total-evidence phylogenetic approach to understanding the evolution, depth transitions, and body-shape changes in the anglerfishes and allies (Acanthuriformes: Lophioidei). PLoS One 20(5): e0322369. https://doi.org/10.1371/journal.pone.0322369 
  • Patton SG (2015) Frogfish vagility between natural and artificial structure. Theses & ETDs 5090. https://digitalcommons.ncf.edu/theses_etds/5090 

 

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