rheotaxis
/ˌriːə(ʊ)ˈtaksɪs/Biology
noun
The directed movement of a motile cell or organism in response to a current of water (or occasionally air); an instance of this.
- Rheotaxis can be positive: against the current, or negative: with the current..
Origin
Late 19th century. From rheo- + -taxis, after German Rheotaxis.