Hey, I'm new to the fish thing myself, but the advice that I received from my local fish shop seems to have worked. I have 6 Beacon Tetras, which are all still alive and Ive had my tank for 4 wks now, even though Im still trying to get levels correct! They are thriving and doing well, so I can vouch that the advice on them as being hardy is true! I was also told that Lemon Tetras are hardy and that Guppies are not very good to start with! Hope that helps a bit Louise
ahhh the art of choosing fish for a tank, I have to say for people setting up new tanks the main rules are: *never add much at one time *always keep the water as good as possible
keeping good water is the best way to prevent disease, it is also the best way to cure disease - so to keep fish healthy this is a must.
as for what fish, I would take my time and choose carefully, I would suggest only buying the fish you see and love instantly as tanks soon become full and before you know it you have a tank full of the fish you quite like, but not the ones you really want.
as for adding the first fish, I would make sure the tank is fully cycled for info on cycling look here and add up to 6 fish every week (oh and dont overfeed) you will most likely find tetras tend not to have too much trouble ajusting like some more delicate fish.