Who else has ghost shrimp that are not intended as food? Honestly I got them to see if these fish would harass them before spending more on Amanos. I do have a rainbow shark in this tank but based on my research, it might be the most mellow version of its species. Now that the shrimp have been in there a couple of weeks, they're getting brave. I regularly see one or 2 swimming all over like the cherry shrimp in the other tank do, and tonight they're joining the celebration over Vibra Bites. 2 of them are now carrying "treasures" around. They're definitely hard to see when not swimming, and they have lots of good hiding places, so I'm not positive how many are still there, but they're definitely more entertaining than I expected!