CREATE TABLE table_30334 ("No. in series" FLOAT, "Title" TEXT, "Directed by" TEXT, "Story & Storyboards by" TEXT, "Original air date" TEXT, "U.S. viewers  ( millions ) " TEXT)

How many different people directed the episode titled 'Fail Fish'?
SELECT COUNT("Directed by") FROM table_30334 WHERE "Title" = 'Fail Fish'
SELECT COUNT("Directed by") FROM "table_30334" WHERE "Title" = 'Fail Fish'