I know its long but please read I need suggestions.
I currently have a 10 gallon tank, it has been up and running for about 8 months. Previously it had only me betta, but when he died I got 3 zebra danios, and then a week later we went to a LFS and we ended up getting 3 tiger barbs and a blue lobster (that's what it was sold as, I searched online and it is actually a freshwater crayfish). We really like the crayfish and the tiger barbs.
At the LFS they pretty much implied that the tiger barbs would be ok in a 10 gallon, when I came home most sites say 30 gallons for them. We are planning on upgrading to a 55 or 75 gallon tank, but it will be in a few months when we have the money for it.
But I am now worried because one of the tiger barbs was acting strangly a few days after we brought him home. He didn't eat today with the other fish, and he was swimming weird. I monitered them all day on and off, but one time when I came back I saw the crayfish had him in his mouth, I startled the crayfish with the fish net but the fish came floating to the top dead...
The guy at LFS said the crayfish would "help take care of any sick fish for you" so after I noticed the fish was acting weird I was worried. One of the other tiger barbs is acting a little weird, though not like the other one (yet) and the other is acting normally as far as I can tell. The danios are all fine. The crayfish isn't really running around attacking everything, but we have seen him in what looks a "waiting for prey" position a few times, but he never got anything, other than that he isn't harrassing stuff.
So on to my question and dilema, I'm worried about the other barbs. I don't want them to die. I don't have an extra tank suitable to put them in or the crayfish to seperate them. The only option is to go get a new 10gallon from walmart and put them in it (or the crayfish), but the tank wouldn't be cycled.
Please advise me what should I do?? Leave them all together and hope it goes well until we are able to upgrade our tank? Or get a new one and move them with the dangerousness of an uncycled tank?
We can't return them to the fish store because it is very far away and we can only make that kind of drive on days when we don't work, which won't be until Monday.