At length, this creature maybe can do with half a banana (8)

(Source: London Evening Standard)

General meaning ⇒ a creature

"half a banana" ⇒ half of "banana" ⇒ either "ban" or "ana"

"maybe can do" ⇒ anagram of "can do" ⇒ e.g. "conda"

Answer ⇒ anaconda