I'm currently bidding on a group of double dose black velvet angels that are currently slightly larger than a dime. For now they'd be going in with my Harlequin Rasboras in the 20g long, but how quickly will they grow/how quickly will I need to get them a new tank, if I do end up with them? It's a group of 5 and I have plans for a much larger tank (most likely 90g) when I move to my new place in late November/early December, but if needed I could set it up where I live now before the move. Obviously it would be easier if I could wait, though! This will be my first go with Angels so I'm not familiar with their growth rates.