This fish has quite unjustifiably been labelled an ‘impossible’ by several writers, some of whom appear to have never even attempted to keep it. The impression that this fish is difficult to keep is undoubtedly conveyed by the enormous lengthening of the upper and lower jaw. This is an adaptation to facilitate the removal of small moluscs and crustaceans, etc. from within coral heads and would suggest that the fish is a finicky feeder. However, this fish is so tough and adaptable in captivity that it will...

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