I have a year old tank that has a overabundand population of inverts. I mean hundreds of the creatures. I Have been watching a Mandrin Goby for 3 weeks and appeared healthy. Brought him home, let him climatize for 20 min. netted and relaeses. Was acting fine. I did notice my cleaner shrimp go after him once and I figured just making friends.Half hour later he was crusing the tank acting fine.The cleaner shrimp is really interactive with my Tang and 2 clowns. I come back an hour later and the cleaner shrimp is making lunch of him. This was a 2.5" fish. Why would the cleaner shrimp kill him? Did I miss something here. :x I'm totally pissed at the cleaner shrimp for his $18 lunch but nature is nature. What's the Deal has anyone else had problems like this?