To fit it for this strange amphibious life, the barramunda has both lungs and gills; it can breathe either air or water at will, or, if it chooses, the two together.    From Wordnik.com.  [Falling in Love With Other Essays on More Exact Branches of Science] Reference

On further examination, however, the despised barramunda proved to be a connecting link of primary rank between the oldest surviving group of fishes and the lowest air-breathing animals like the frogs and salamanders.    From Wordnik.com.  [Falling in Love With Other Essays on More Exact Branches of Science] Reference

To be sure, in size and shape this 'extinct fish,' still living and grunting quietly in our midst, is comparatively insignificant beside the 'dragons of the prime' immortalised in a famous stanza by Tennyson: but, to the true enthusiast, size is nothing; and the barramunda is just as much a marvel and a monster as the Atlantosaurus himself would have been if he had suddenly walked upon the stage of time, dragging fifty feet of lizard-like tail in a train behind him.    From Wordnik.com.  [Falling in Love With Other Essays on More Exact Branches of Science] Reference