I bought my dad a 5g desk top tank and am currently cycling it at my home because he does not know he's getting it. Once cycled I plan to drain the water into a couple of bottles then add it back when I get to his house (only 20 minutes away).He lives alone and has not had fish before but I am there visiting him at least twice a week if not more and will be doing the maintence, I myself have a 52g and a 40g. I was thinking he would enjoy mollies and or fancy guppies. I am wondering if I could put in both and if so how many of each. Would 2 mollies and maybe 4 guppies be too many? I have never dealt with a tank this small before. I want him to be able to watch something other than TV all day. I personally love betta's but my sister thinks he would be happier if there was more than 1 fish and I tend to agree. I am open for suggestions.