The standard metabolic rate of dolphin fish

D. D. Benetti, R. W. Brill, S. A. Kraul

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


The standard metabolic rates (SMRs) of 11 (1·395-4·125 kg) dolphin fish (mahimahi or dorado,Coryphaena hippurus) were measured at 25°±0·5° C. Fish were prevented from swimming with neuromuscular blocking agents and force ventilated. Heart rates were determined simultaneously. SMRs (358-726 mg O2h-1) were several times those of other similarly sized active teleosts such as salmonids, but close to those of tunas. Heart rates (84-161 beats min-1) were also high, but alike those of tunas under similar circumstances. As in tunas, the high SMR of dolphin fish may result from high osmoregulatory costs engendered by their large gill surface areas and/or other adaptations necessary for achieving exceptionally high maximum metabolic rates.

Original languageEnglish (US)
Pages (from-to)987-996
Number of pages10
JournalJournal of Fish Biology
Issue number6
StatePublished - Jun 1995


  • dorado
  • energetics
  • growth
  • mahimahi
  • pelagic fish

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science


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