Read the sticky about sharks HERE. For the smallest species of true cat sharks (carpet sharks are often mis-IDd as cat sharks), a chilled 240 gal tank is the minimum size.
Al prazo here on RC is very sharp when it comes to elasmobranchs, so hopefully, he'll chime in.
Back when I had my coral catshark, he lived quite well with a summana grouper, a giant domino damsel, and a massive female clarki. Finally ended up selling him so he could enjoy a bigger tank.
As a shark person, that book is nothing but good pics and bad info -especially in regard to tank volumes.
The coral cats and marbled cats are great for large home size aquaria due to the smaller size and how hardy they are. Mid 70s tolow 80s for temp, and your typical marine life water parameters will do. They like darker tanks and places to hide. They are also pack hunters, so having more than one will help keep them stimulated to feed a little easier. I had a very solid breeding group of them several years ago. Don't be surprised if they hide most of the day (they are noctural by nature). Also, expect them to spend 90% of the time laying inactive on the bottom. Swimming is usually associated with hunting/feeding.
I had my shark in a 180 gallon. I rescued him back in November of 2012 at 16" long from a 18"cube at a LFS, where he had been kept over a month. Brought him home and put him in my 187 gallon (60"x24"x30") where he ate all my wrasses. Moved him into my 180 gallon with the previously mentioned fish. Eventually reached 23" and while he was able to turn and move pretty easily, it was sad to see him cross the tank in one or two beats of his tail. So I found someone locally in June of 2013 with an 8'x4'x30" where he would have more room to stretch his fins.
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