I tried to start with 2 once and with 3 at another time. I ended with one each time (they are now in two different tanks).... let's just say they didn't like each other 
I seem to remember that they can be kept as a group. Does anybody have experience with this - how many do I have to keep together? And do they have to be similar in size? Suppose the tank is big enough (say, 300g).
Thanks...
I seem to remember that they can be kept as a group. Does anybody have experience with this - how many do I have to keep together? And do they have to be similar in size? Suppose the tank is big enough (say, 300g).
Thanks...

