my garra doesn't have a strong current and doesn't seem to mind, but I also wont sit here and pretend that I have a perfect setup for him. I don't believe it is as important for them as for the hillstreams tho. reticulated hillstreams and tweedie loach are shaped the way they are specifically because they live in fast rivers and spend their lives hopping up waterfalls. Garra did not develop the same genetic tools so they would prob be just fine in your tank. We only bought the one we have as a test to see if it would work ok in our loach tank, and we ended up liking him so much that we are going back some time in the next week or two and getting three more or so.