stenobath


sten·o·bath·ic

S0737100 (stĕn′ə-băth′ĭk)adj. Capable of living only within a narrow range of water depths. Used of an aquatic organism.
[steno- + Greek bathos, depth + -ic.]
sten′o·bath′ n.

stenobath

(ˈstɛnəʊˌbɑːθ) n (Biology) an aquatic organism that can only live within a limited range of water depths