euod- that grammatonotus-macropthalmus is absolutely stunning! Maybe one day

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A Z- Thanks. In the wild they do feed primarily on sponge. That said, I have had mine for quite some time on a diet of mysis, pellet, and homemade reef food. They are fat and have been growing at a steady rate. I will have to double check but I am pretty sure that I have had them for a little over a year and a half. If you are able to obtain a small specimen it can be quite easy to convert them from their diet of sponge and tunicate to a captive diet. Larger adult specimens tend to be more set in their ways and can be difficult to wean onto captive diets.
~Michael