Ethan:What is the size of your tank?
And this may relate yo your question and you may find it helpful even though your doing cherry or amano shrimp this is about ghost shrimp
http
/www.bettafish.com/showthread.php?t=56464
tell me if you find it helpful
quoted from Tsuhei
I actually suggest not getting them from my own personal experiences.
I got two for Astaire's tank a while back. They actually started attacking my fish. In fact, they latched onto his tail fin and ate part of it even though I fed them regularly. I took them back to the petsmart immediately and didn't even ask for my money back. I didn't want them anymore.
Right after that incident, he got finrot and I've been battling it for about 4-5 months.
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Ethan: I find that might not be the case with cherry shrimp though just be cautious I think it'll probably be fine tho
quoted from Shinnybetta
Ghost shrimp don't produce that much waste. And it isn't very harmful. Also, I don't think those were ghost shrimp, there are larger species that look similar and may attack fish.
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I would also consider that post
Look here too
http
/answers.yahoo.com/question/index?qid=20101107090822AAl31H6
Hope this helped here is a betta care sheet http
/www.bettafish.com/showthread.php?t=49160