Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_30334 ( "No. in series" real, "Title" text, "Directed by" text, "Story & Storyboards by" text, "Original air date" text, "U.S. viewers (millions)" text )

### Question ###
How many different people directed the episode titled 'Fail Fish'?

### Accurate SQL ###

SELECT COUNT("Directed by") FROM table_30334 WHERE "Title" = 'Fail Fish'