My clowns are weird

[Dearth]

So I've had my black percula clowns for just over 14 months and these guys have never conformed to normal clown behaviour when I got them initially they hosted my yellow tail damsel which was quite hilarious to watch then about a month later switched to a rock then when they moved to my big tank they hosted a few different things until they settled on one of my powerheads which they have hosted since now about a week ago one started hosting one of my frogspawn now both are switching hosting duties between the frogspawn and the powerhead.

I will never understand clowns