All the research I've done on the Blue Throat indicates that he is a surface feeder (plankton). And tends to leave tankmates alone. I've spent about 3 months looking and reading about them. He'll get about 9 in max. Which I think is about as big as my tank can take. I found many cases where people have kept these with clams, shrimp, crabs with no issue. However; you can also find people out there keeping Clown Triggers in Reef tanks. (bad idea)