We interpreted the amphibious blenny as a transitional form between the aquatic and terrestrial
blennies. Whether the terrestrial blenny (Alticus)
will also prove to be a transitional form is unknowable. It is tempting to see it as the future ancestor
of a lineage of bizarre, fully terrestrial fish. Such a
lineage has evolved before. We are among its progeny. However, the supratidal zone may be as far
out of the water as any marine fish will get. See:
Graham, J. B., and H. J. Lee. 2004. Breathing air in air: In what ways
might extant amphibious fish biology relate to prevailing concepts
about early tetrapods, the evolution of vertebrate air breathing, and
the vertebrate land transition? Physiological and Biochemical Zoology 77:
720–731.