1: A number going to church for fish (5)
2: Chip is describing rare bird call (5)
3: Thus might florin study a silly timekeeper (3-3,5)
5: Difficult newspaper or novel (4,5)
6: Take Chair in university (3)
7: Giant reptiles make a racket and love southern gold, but principally really stink! (9)
8: Special delivery can erase a problem. (9)
12: Girl hatches subterfuge in prison tower (11)
13: Every other starlit fish starting search for little percussion instruments (9)
14: Gory pitch worked as protection for maker (9)
15: New York decries eccentric period of medical training (9)
20: Do as I say in short retreat (5)
21: Guinevere maintains, 'When hell freezes over!' (5)
22: Come back in just a pseudo pair of shoes (5)
24: Fish spawn upstream in little orifices (3)