I never said it was the only choice. Go back and read. I said if they didn't want a betta they could ask what other things would be appropriate for that size tank.
"a betta can live in a coffee mug" The question is: should a betta live in a mug? If I was a betta and had you for a care keeper, I would probably jump out and end it all.
"A botia can live in a ten gallon with ease." First off he doesn't have a ten gallon now does he? Secondly, you don't even know what kind of fish he has. Botia is just a general family name that can apply to many loaches. Look it up:
Freshwater Fish Photos & Profiles at the Age of Aquariums A 5 gallon is not big enough for those active fish that you listed, and a molly! A molly that can grow to be 4-5 inches.:icon_mad:
"a 5 is big enough for a begginer you dont have to go out and spend 50+ dollars on a 10 gallon starter kit plus a heater" If you are going to do something, do it right. For example, you cannot say "I want to be an electric guitarist" then go out and buy a guitar but no amp. Don't get started in a hobby unless you are going to devote yourself to it, especially when dealing with living animals.
"its not hard to keep a 5 gallon , you have to pay much attention to it i had 36 fish in my 5 with 0 nitrate 0 nitrite and 0 ammonia." Who puts that many fish into that small of a tank and for what purpose? Just because one person does something incredibly stupid it doesn't mean everybody else should do it. Also what kind of fish were they? Plastic fish.:icon_mrgr
Again, a 5 gallon is hard to keep because things like temperature and water quality change so quickly in such a small amount of water. That means it is not ideal for a beginner who doesn't even know how to gravel vaccum or feed fish the proper amount.
Glad to know that you are the person at the LFS that is telling people nonsense like this. I would be sure to avoid your type, since you like to run your business by telling lies. I wish I could just come through my computer and give you a good shake.

No but really no hard feelings. It is obvious that you are ignorant and don't want to see the facts.