1993 December 28, James Younger, “Fishy Short Cut To Mapping Human Genome”, inThe New York Times[1]:
With a genome of only 400 million or sonucleotide bases, the pufferfish, Fugu rubripes rubripes, has the smallest known genome of any vertebrate animal.[…] But the region of DNA between the landmarks can be a million or morenucleotides long.