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Tag: Lampris guttatus

Fun Science FRIEDay – “A cold-water fish with a warm heart!”

Posted on May 15, 2015 By Kersey Sturdivant
Uncategorized

OPAH, OPAH, OPAH!

Recently scientists at NOAA’s South West Fisheries Science Center made a stunning discovery, the worlds first known warm-blooded fish, the moonfish, opah  (Lampris guttatus). Until this recent discovery all fish were considered cold-blooded ectotherms – allowing their body temperature to fluctuate with the change in ambient ocean temperature. However, opah’s are different, in that these largely solitary fish regulate their internal body temperature above the ambient temperature of their environment like mammals and birds (other warm-blooded animals).

Opah off the coast of southern California. (Photo credit: Ralph Pace Photography)
Opah off the coast of southern California. (Photo credit: Ralph Pace Photography)

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