Pictures of Sea Apple feeding

[Delphinus]

Cool pictures. A little off-topic, but can I ask how the two tangs are getting along? Was there ever any issues when they were first put together? (Are there any issues now?) They look good.

I know your tank is quite large and maybe that's the trick.

I happen to have both a YT and a RS sailfin but in different tanks. The yellow is out in the open all the time, swimming around, not afraid of people watching the tank. Whereas the sailfin is the IncredibleInvisibleFish(tm). He has a den in which he sits as long as he things I'm watching the tank. He'll come out for food, and also when he thinks nobody is in the room. But make the mistake of blinking, and zip! He's gone. I'm wondering if one day if I can set up a ReallyLargeTank(tm) if I'll be able to house them together. I think the issue for his shyness is that there's a lot going on in his tank (current, SPS, etc.) whereas the yellow is in a tank with a lot less stuff on the rocks (maybe equating to "more swimming room").