Thanks.
With the help from here I can understand why they died though. I was worried that Bertha was picking on them but they all looked fine (other than not being alive). The last one that died was swimming sideways for a while and would get swept away easily with the filter flow. She'd like herd him towards the food and keep him away from the plants (so he wouldn't get caught in them) and stop him from hitting the sides. They would all swim together like she was their big mamma.
I did the whole acclimatizing thing with the fish.
We'll probably do the starter fish cycling since we already have a fish in there. I can't see her being too happy about going into a much smaller tank without as much neat stuff. Will she get along with and danios though? Or should I get a couple more Bettas?
Thanks so much again. This has been really helpful! Like I said, I know small animals and some exotics, but not fish!
