I’m in the process of adding fish to my new 120 gallon. I want lots of small colorful or interesting fish to go with the corals. i currently have a lawnmower blenny in the tank. Can multiple lawnmowers coexist well? What if I added a tail spot blenny? I’m staying away from bicolor seven though I like them. I’ve heard they can be rough on LPS. Also looking at some *obies. How are they in groups either single species or multiples?