The three smaller ones hang out in the corner a little out of the flow. I mixed up a batch of mini mysis, arctipods, spirulina brine, and krabby joe's roe plus algae. I thaw it all in tank water and use a long turkey baster to slow release it right next to them. No sudden movements with the baster and they don't seem to mind it. They are currently in my 75 gallon LPS and softie reef. They are in with a group of 4 eightline flasher wrasses, a rhomboid female, and a barred blenny that was also added same day. Tank temp is 77. I do 15-20 gallon changes every week to 10 days. I feed HEAVILY due to the high metabolic needs of the wrasses. Diversity of foods is key for their survival and the pipes will benefit from this. I was running the tank at 81. Had a tough time getting down to 77, but it is holding steady there now. I like the pipes and wrasse combo because they don't mess with one another and aesthetically, they are a great contrast to one another in shape and swimming style.