my first tank was a 2g hex, i had a few goldfish at first but then after they snuffed it i had 5 wcmm's and 1 gold fish and they all lived fine for ages. we allways changed half every week and added a small amount of stress stuff. maybe if you use sand and a very small internal filter, £10 fluval or sumthing. ug are to much hassel they should be nuked and never used again. check you can slow the flow of the filter before buying and if you cant at that perticular store, im sure someone on here will recomend a small one which you can get in the states. if you use sand as a substrate and add a small amount of filter cycle every water change you will most proberly develop a nice healty betta, we have 2 bettas and the one with his own tank has nice untorn fins, very dark head and looks very livly. if your gonna get a fish, get a betta.
its only males they cannot be paid with, however just 1 female would prolly get beat or killed in such a small tank.
55US Gallon Medium Planted | 36x15x24Tall
PH 7.0 - 7.2 GH 11
Ehiem 2232 Thermo
2.7WPG 160W 10,000k 5xNO T8's
Sand+Eco Clay, CSM+B Baby Steps + Pres.Co2