Fish that lack pelvic fins (4)
I believe the answer is:
eels
(Other definitions for eels that I've seen before include "Elongated fishes" , "Long fishes" , "Fish (that may be jellied)" , "Lengthy fish" , "Slippery creatures" .)
I believe the answer is:
eels
(Other definitions for eels that I've seen before include "Elongated fishes" , "Long fishes" , "Fish (that may be jellied)" , "Lengthy fish" , "Slippery creatures" .)