Flushing RKO Keith's Theatre - wideimaging

The stylized dolphin, a recurring theme in the RKO for both the polychromatic fountains and heraldic shields. I haven't quite deciphered the meaning yet, although I did find something very similar on St. Michael's Church a few blocks away (and in Rome at the base of Bernini's 1643 Triton fountain in Piazza Barberini).