Are they easy tangs to keep? I heard they're finicky feeders. Are they prone to disease among Tangs and fish in general? Considering a Tomini as part of my fish cleanup crew, if it's an easy fish I'll probably make space, but many say the genus Cthenochaetus is not a very easy genus to take care of. Would love your experiences and suggestions. The Tomini will go in together with my Yellow should I opt for one. Currently 50/50.