Black fish makes animal cry (4)
I believe the answer is:
bray
'animal cry' is the definition.
'bray' can be an answer for 'cry' (bray is a kind of cry). I am not sure about the 'animal' bit.
'black fish' is the wordplay.
'black' becomes 'b' (abbreviation as in pencil classifications).
'fish' becomes 'ray' (ray is a kind of fish).
'b'+'ray'='BRAY'
'makes' is the link.
Can you help me to learn more?
(Other definitions for bray that I've seen before include "Its vicar was adaptable" , "Sound asinine" , "Harsh noise" , "Donkey's heehaw" , "Ass's cry" .)