Interesting fish, the things that would concern me is the "expert only" rating it has, maybe get a species specific tank for these creatures
"Caution: This species secretes or releases toxins when stressed or injured that may kill fish in the aquarium. LiveAquaria.com cannot accept responsibility for any loss that may occur should this animal poison the aquarium.
Please note: We guarantee that ALL aquaria species we offer will arrive alive and in good condition. However, because of the increased level of care required for this particular species, it has been designated as "Expert Only." This species is recommended only for the expert marine aquarist, zoo, or research institution please."
Aslong as they don't die stressed they should not release toxins, a risk im willing to chance. If there's any info i missed please feel free to post. Put a 2cm one in my tank. Must say I adore him/her to bits, healthy and stable with no bully's to cause it greef.
Absolutly wonderful fish in a reef setup, all other fish will leave it alone as by some thing magical they know he is a nuke.
They are also really curious fish and will often come over to see what you are doing when working in the tank and can also deliver a needle prick bite that can get you by surprise at times, i would recommend.
Yea the fish is very peaceful. Gets along quite nicely with my other fish and corals. Seems to be a picky eater though, eats something of everything but to small degree. Doesn't worry me though as he seems pleased.
Also something i read which i thought ild share. Dont house them with cleaner wrasses. The Cowfish doesn't contain scales so the wrasses will irritate it. Cleaner shrimp seem to be fine though as his allready made a pitstop at mine.
High water flow is a no no, you will need to put your pumps down a notch. Otherwise he will get blown all over the show, stress out and possibly die. And u are correct they basically move at a tortoises speed.