There’s a “water” kind (in the Euphrates?) (3)
I believe the answer is:
rat
'there's a water kind' is the definition.
I can't tell whether this definition defines the answer.
'in the euphrates?' is the wordplay.
'in' says the answer is hidden in the clue.
'RAT' can be found hidden inside 'euphrates'.
Can you help me to learn more?
(Other definitions for rat that I've seen before include "that gets out of stricken vessel" , "one escaping doomed vessel?" , "one not going down with ship" , "Strike-breaker" , "Domestic rodent" .)