Aggressive Neocaridina?

Help! I got four neocaridina (2 yellows, 1 cherry, 1 rili) about 2 months ago and added another cherry and a black 2 weeks ago. Shrimps had all been molting fine, eating well, and exploring the tank. Last week, the largest shrimp, a yellow female, started displaying aggression. She would grab the food as soon as I dropped it in the tank and charge and fight any other shrimp that came near it. Today, I found her eating one of the cherries!!!! The cherry was totally fine last night, and only a little smaller than the yellow. Based on the pieces of shell floating around, I have to assume that the yellow attacked while it was molting. Is this normal? What am I doing wrong? How do I keep this from happening again? I’ve isolated the attacker. Thank you for any help!

2.5 gallon planted tank, feeding Aqueon Herbivore Shrimp Food daily (splitting pellets to try to let the other shrimps get food when the yellow hogs a piece)

 

I don't think the yellow attacked and killed her it's not what they do, the cherry would have been dying or dead for the others to eat her and that's natural for shrimp, there's no need to move the yellow out

 

Having multI colour neos in the same tank will lead to most of the new born shrimp losing colour and return to a brown colour.
The cherry probably died while molting or was close to it, I don't think i've ever heard of shrimp being that agresive.

 

Having multI colour neos in the same tank will lead to most of the new born shrimp losing colour and return to a brown colour.

Is that always true? I was watching a YouTube video a week or so ago from LRB Aquatics and he said mixing colors can produce new colors.

 

Yes it’s true. Your shrimp will over tune turn brown. You may get a few offspring that get different colors but they will turn brown (there natural color) sooner or later. IMO. Mixing Neo colors should be avoid.

 

Neo shrimp will certainly eat dying things (I recently lost a pleco that they started in on before it had fully died). And will try to make off with food when possible to eat without fighting for it, but I agree with the others that it’s unlikely it killed the other shrimp. I don’t think there’s any significant aggression based on what you mentioned.

 

Thank you all for your replies. I saw a couple reports of people losing shrimp when larger females started hunting smaller juveniles? They said increasing protein in the diet made them stop. I think I’ll keep her alone for a bit while the smaller shrimp grow and add some tubifex worms to everyone’s diet. Then I’ll try putting them back together. And hopefully it’s like you all said and she never actually killed the other shrimp to begin with, so there won’t be any problems when I put her back. I also added some extra plastic plants for cover.

I know that offspring are likely to revert to brown, but I was just interested in trying my hand at shrimp keeping and these are what were local. Plus I’m curious to see if they might throw some new colors.

 

We ALL seek the PURPLE shrimp! Unfortunately, mixing blues and reds gives you anything BUT purple.
Hope springs eternal tho.