Perry's Index to the Aesopica
Fables exist in many versions; here is one version in English:
THE DOLPHINS AND THE WHALES
The dolphins were always at war with the whales. A crab came forward to mediate
between them, as if someone without any public reputation could bring about
a peace between warring kings!
Aesop's Fables. A new translation by Laura
Oxford University Press (World's Classics): Oxford, 2002.
cover, with new ISBN, published in 2008; contents of book unchanged.
Perry 62: Gibbs (Oxford) 220 [English]
Perry 62: Townsend 116 [English]
Perry 62: Babrius 39 [Greek]
Perry 62: Chambry 95 [Greek]
You can find a compilation of Perry's index to the Aesopica in the gigantic appendix to his
edition of Babrius and Phaedrus for the Loeb Classical Library
(Harvard University Press: Cambridge, 1965). This book is an absolute must for anyone interested
in the Aesopic fable tradition. Invaluable.