### Clue: It is plain that man is being pursued by carnivorous fish (9)
### Answer: PIKESTAFF 
 ### Explanation: Definition: It is plain
  STAFF(the verb, to *man*,provide staff) +(*is being pursued by*) PIKE(*carnivorous fish*, a big fish that eats little fish, and other aquatic/amphibous animals).  Imagine that the whole word is moving from left to right, in which case it looks as if "pike" is pursuing "staff".
Defn:  From the simile, "as *plain* as a pikestaff", which can be quite an insulting thing to say.