So my main tank cracked one day and I had to hurriedly set up a temporary 55G holding tank, dumping fish and plants in there as quickly as I could. I have 7 large Clown Loaches and several other zebra loaches and yoyo's and the guys were really getting stressed because my hands were in the tank every few minutes and plants were going in and out all the time, so.... I decided to build them a high-rise high-tech apartment building for shelter until I could move them to their more permanent home. The whole thing is held together by aquarium silicone and they LOVE it. Their biggest kick seems to be squeezing as many of them into one pipe for the zzzz's - like cramming twenty okes into a mini ! This would clearly not be everybody's cup of tea, but it works like charm as temporary accommodation !