There is little information about mobility of non-game fish, especially benthic species, although movement is a key process underlying the dynamics of populations for stream fish. We surveyed the movements of Lefua echigonia, a small benthic fish, in lowland headwater streams by mark-recapture technique. Our objectives were to examine: (i) the degree of mobility of the species, (ii) the influence of hydraulic condition, density and body size on the mobility. Movements of the species were very restricted: 43.8% of fish were recaptured in the same site in which they were initially captured and mean movement distance over a 12 month was about 40m. Movements of recaptured fish were biased in the upstream direction. Besides average migration rate for each population was positively correlated with catchment area. These findings may support a hypothesis that the upstream movement is compensatory for passive downstream movement during the early life stage. Meanwhile, individuals in conditions of low density tended to move, and mobile individuals had a tendency to be recaptured in a relatively high density site. This suggests that in this system the mobility of L. echigonia is influenced by the presence of other individuals.