Agreed, take care when mixing wrasses. My ornate (H. ornatissimus) & Potter's do NOT get along. When I added the ornate wrasse things were just fine (the Potter's was already established), but over time as s/he's grown the ornate has become a horrible bully. The Potter's now comes out before lights-on to be fed, and when the lights come on she goes into hiding for most of the day. If she tries swimming in the open, the ornate chases her back into the rockwork. I've been trying for months to get this beast out - the rockwork is cemented together with coral growth, and traps don't seem to work so far. I genuinely wish I'd never added the second wrasse.