The Collaborative International Dictionary
Fishlike \Fish"like\, a. Like fish; suggestive of fish; having some of the qualities of fish.
A very ancient and fishlike smell.
--Shak.
Wiktionary
a. 1 Having some characteristics of a fish. 2 Similar to that of a fish; as, fishlike scales, fishlike eyes
WordNet
adj. resembling a fish; "an extinct fishlike vertebrate"
Usage examples of "fishlike".
Fishlike, and then no longer fish-like, it toiled up the steep slope of evolution, mouselike, pig-like, apelike, babylike.
Shevek located the very small bed, which had been standing ready in the corner for four decads, and the infant in it Somehow in this extreme rush of events the midwife had found time to clean the infant and even put a gown on it, so that it was not so fishlike and slippery as when he had seen it first.
Thin natural scientists who had spent months locked away in their rooms growing white and fishlike, emerged blinking into the light.
Ahead were a blue sea and the great underwater shelf where a colony of class-B Silkies lived their fishlike existence.