Abstract
Tolerance to current velocity was compared among six stream gobies of the genus Rhinogobius (cross-band, dark, large-dark, cobalt, and orange types, and R. flumineus). Each individual of the six gobies was exposed to incremental increases in current velocity within a laboratory flume. The current velocity at which each individual was dislodged was recorded and compared by species. Results from comparisons showed that the tolerance of gobies declined in the following order: cobalt, large-dark, dark, cross-band, R. flumineus, and orange type. This interspecific difference in velocity tolerance is consistent with their habitat segregation patterns as previously reported by field observations.
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