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Just as long as you make sure to have enough hiding places like nooks and caves this will not give you any problems.

There are several hidey places in that pile of rocks/slate/wood. Even when the gourami was under there, I still could not see either of the zebs. But as soon as the gourami moved, the zeb went right back to his chosen spot. One seems to hide under the wood, and the other has found a place on the other side, totally out of sight... So there seems to be adequate choice as far as nooks to hide in.