I've also heard that bettas get stressed in tanks of over 10 gallons because they feel the need to patrol the entire area. I would recommend getting a separate 5 gal for your betta if you want to keep him. Bettas are fun, they stay small, have beautiful finnage, and are very hardy. I love em. Also, I wouldn't house a male with any number of females unless you're an experience betta breeder. They are extremely aggressive fish and I would recommend keeping them alone. You can keep 5 or 6 betta females in a larger tank, though, provided that you have lots of cover (BTW, in case you don't know, the males have the long elegant fins and the females have fins that are shorter and usually less brightly colored)
Depends on the kind of pleco you have. If you're pleco looks like this: http/www.tropicalresources.net/phpBB2/te...iles_L021-1.jpg
Then he is a common pleco. Those can get to 2 feet long, although they grow pretty slowly, and they're pretty decent beginner fish otherwise. There are some rarer varieties of pleco that don't get too big at all , but you would have paid much more for them and odds are that you have a common pleco. They should be fine for a while, but you may have to give them to someone with a bigger tank somewhere down the road.
The mollies are livebearers, so its better to keep one male (you can tell because they have external genitalia, known as a gonopodium) with 2 or 3 females, and keep that ratio so the males don't bother the females excessively. On a side note, your mollies are preeeeeeeeeeeeeeeeeeeeeeeeetty.
Good luck!
Depends on the kind of pleco you have. If you're pleco looks like this: http/www.tropicalresources.net/phpBB2/te...iles_L021-1.jpg
Then he is a common pleco. Those can get to 2 feet long, although they grow pretty slowly, and they're pretty decent beginner fish otherwise. There are some rarer varieties of pleco that don't get too big at all , but you would have paid much more for them and odds are that you have a common pleco. They should be fine for a while, but you may have to give them to someone with a bigger tank somewhere down the road.
The mollies are livebearers, so its better to keep one male (you can tell because they have external genitalia, known as a gonopodium) with 2 or 3 females, and keep that ratio so the males don't bother the females excessively. On a side note, your mollies are preeeeeeeeeeeeeeeeeeeeeeeeetty.
Good luck!