Miss Wiggle
Practically perfect in every way
Nice Pic Miss Wiggle...was that when you were on your holidays
Anyway, I didn't buy another fish....its a week on and all of them seem ok...I am watching one lad though who appears to have something on his tail....it looks like perhaps a tiny chunk was taken out it.
I notice the biggest fish is bullying the others....perhaps he nipped this fish?
(This big fish is bully the others alot actually...he's always chasing the others around the tank and showing aggressive behaviour...I'm wondering if this had something to do with my other fish dying as he was the weakest???)
Anyway, I'll watch the smaller fish for another few days in case the tail thing develops into anything.
Yup, next to the lovely Lewis Hamilton's McLaren Mercedes F1 Car....... Just about the most beautiful thing I have ever seen in my life!! If your interested in F1 there's a load of pics in the non-fish photo's section.

yeah a bully fish could definately have contributed to the weak one's death. Unlikely to have attacked and killed him but if a fish is in a stressful environment they will find it much harder to recover from illness's as such remained weaker for longer.... you can see over time how that would contribute.
while cardinals are generally peaceful fish any species can have the odd rogue example who obviously hasn't read the fish book on how to behave and does his own thing. In a larger tank or shoal this probably wouldn't be a big issue but in such a small tank the effects will be magnified. It's always difficult to quantify the amount of bullying going on over a forum so it's a bit hard to get a handle on the most appropriate course of action. It's really a case of monitoring the tank closely and making a judgement call..... you should consider trying to find another home fro the bully by returning him to the store or finding a fellow hobbyist willing to take them.