Fresh information about the first amphibians (5)
I believe the answer is:
newts
'amphibians' is the definition.
(I know that newt is a type of amphibians)
'fresh information about the' is the wordplay.
'fresh information' becomes 'news' (I've seen this before).
'about' is an insertion indicator.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'news' going around 't' is 'NEWTS'.
'first' is the link.
(Other definitions for newts that I've seen before include "creatures" , "Kind of water lizards or efts" , "Small amphibians, efts" .)