I am preparing a critical commentary that will update many of the readings in my Ph.D. dissertation; see Laurence Kant, “The Interpretation of Religious Symbolism in the Graeco-Roman World: A Case Study of Early Christian Fish Symbolism” (Yale Univ., 1993), pp. 761–764. My work stands on the shoulders of giants such as Sir William Ramsay and A. Abel (“Étude sur l’inscription d’Abercius,” Byzantion 3 [1926], pp. 321–411).