  Motivated by the identification of the blazar TXS 0506+056 as the first
promising high-energy neutrino counterpart candidate, we search for additional
neutrino blazars candidates among the Fermi-LAT detected blazars.
  We investigate the multi-wavelength behavior from radio to GeV gamma rays of
blazars found to be in spatial coincidence with single high-energy neutrinos
and lower-energy neutrino flare candidates. In addition, we compare the average
gamma-ray emission of the potential neutrino-emitting sources to the entire
sample of gamma-ray blazars. We find that neutrino-emitting blazar candidates
are statistically compatible with both hypothesis of a linear correlation and
of no correlation between neutrino and gamma-ray energy flux.
