Thanks for the response. I love this guppy but I have a feeling he isn’t going to get along well with anyone. I’ll have to think about what I’m gonna do if he doesn’t chill out. Thanks again.
Sorry to try to ressurect this but I find myself in a similar situation. I just added 6 purple harlequins yesterday and the one guppy I have in the tank is chasing them everywhere. Geordie what did you in this situation? Would putting a female guppy in calm him down?