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Oh ok. But it doesn’t dig into the gravel otherwise. Thanks for the infoThat could be the reason that the loach buries itself. Being on its own is stressful, then water changes cause more stress so it reacts by trying to hide. These fish should really be kept in groups of at least 6.
Oh ok thanks. What if I get two more yo-yo loaches? I think I might not have enough space for 6.Water changes can be stressful to fish, and if that fish is already stressed for some other reason, the extra stress of the water change could cause it to try and hide when usually it doesn't do that.