Any tank where a rtbs can catch a blue botai is not set up well for botai in the first place. I've not met a rtbs in 30 yrs that could catch one of a group of them. In fact mine usually
take it in turns to take the micky and tire out the sharks. Swapping over places mid chase. Then when they have had enough they dive straight into the pipes and block them. An inquisitive fish that needs something to keep it entertained. Much more so than my clown coach do, but not as much as eos, they're just downright trouble makers. Rtbs would not last in a group of botai eos.