Pull up fish beneath Fal's banks - caught using this? (3,3)

'caught using this?' is the definition.
The definition suggests a singular noun which matches the answer.

'pull up fish beneath fal's banks' is the wordplay.
'pull up' is a reversal indicator (I've seen 'pulled up' mean this).
'fish' becomes 'dory' (dory is a kind of fish).
'beneath' means one lot of letters go next to another (in a down clue, some letters go below others).
'banks' suggests removing the centre (the sides or banks of the word).
'fal' with its middle removed is 'fl'.
'dory' back-to-front is 'yrod'.
'yrod' put after 'fl' is 'FLY ROD'.

Can you help me to learn more?