notafish : inv. n. from English "not a fish" .
From Delphine, pronounced Delfin [de], or delfín [es] = dolphin, which, as everybody knows, is not a fish but a mammal
NB : notafish does not take a capital "n", ever, under no circumstances. Even at the beginning of a sentence and even if this %?/*! software won't take a nickname with a little 'n'.
You will find me most on my meta page.