Opah world’s first fully warm-blooded fish


Opah, World’s first fully warm-blooded fish was discovered recently and it was discovered by scientists at the US National Oceanic and Atmospheric Administration (NOAA). Opah or moonfish fish has identified by rusty reddish color with white spots and bright red fins and this fish has ability to circulate heated blood throughout its body which makes it first fish known to be fully warm-blood.

  • Weight of Opah fish is up to 90 kg and has an oval body shape and it is a vigorous predator in frigid ocean depths and preys on fish and squid.
  • Opah or moonfish fish is deepwater denizen and usually found in oceans worldwide and generally found at depths of 50-400 m and capacity of this, it can internally generate heat through constant flapping of wing-like pectoral fins.
  • This generated heat has an average muscle temperature about 4 to 50 C above the surrounding water temperature.
  • Warm-blooded animals generate their own heat and maintain a body temperature independent of the environment and it is useful of distinct advantages such as faster swimming speeds and reaction times, better brain and eye function etc.

- Published/Last Modified on: May 20, 2015