honda2sk,
Thank you for offering your opinion on the long term success with Moorish Idols. Although these fish are very challenging to maintain on a long term basis, we have had numerous success stories from some of our more advanced customers on their long term success with these fish.
I would recommend not purchasing this fish if aquarists are unsure that they can provide the proper husbandry for this delicate species.
Moorish Idols are aggressive fish among themselves so marinating a single specimen in a very large aquarium is the ideal scenario. Tank mates must be non aggressive species so that the Idol can be the dominant fish in the mix. A varied diet consisting of algae sheets, vitamin enriched mysis, and foods designed for angelfish that contain sponge are ideal. Small feedings several times per day is a must, as this fish loves to graze for food all day.
The collection techniques, holding, and transportation of these fish play a major role in the success of maintaining this species long term. From my experience, Moorish Idols collected in Hawaii, Fiji, or Tahiti are the only ones to consider purchasing as they are collected properly, and transported quickly to the US.
I hope this helps provide you with some more insight on this beautiful fish.
Cheers!
Kevin Kohen
Director of LiveAquaria
Drs. Foster and Smith