In a word, No.
That is way too many fish for a 6 1/2 gallon tank. If you went with just the Guppies, the females will overpopulate the tank within a few months. If you went with all male Guppies or Endlers, you can put 3 or 4 males together with a couple of shrimp or the clam. The tank could hold a small school of chili rasboras or Celestial pearl danios better than a school of Tetras. I would not do the Gourami at all. Or you could go all shrimps or shrimp and clams. Another option if you like the heavily planted look, a male OR female Betta would do nicely in that kind of set up. Could i do 3 male guppies/endlers, 5 celestials, the 2 frogs, snail, shrimp and clam? I want a tank with a decent amount of fish without stressing the bioload.
Then you are going to need to get a larger tank. Consider this: a 6.5 gallon tank probably only holds at best 5 3/4 gallons of water when empty. Then deduct water for displacement from substrate and decorations and you are talking about only 4 to 4 1/2 gallons of actual water in the tank. That's not a lot of water which means you can't hold a lot of fish.
what would you put in? (I cant get a larger one)
You could put more shrimp than fish in that sized tank OR go with the frogs ( not together with the shrimp) OR go with a male Betta OR 2 female bettas OR 3-4 male Guppies or Endlers if it were me. Your tastes may vary.
There are also the Celestial Pearl Danios or Chile Rasboras that would be in a small school ( 6-8) but if you go with these, they are not going to be larger fish or flashier fish color wise. There are a number of "Nano" fish but just make sure when you research them, you check the minimum tank size and how many you need to have a successful school. Depending on who you ask, any tank under 20 gallons can be considered a " Nano" tank so just because it's a "Nano" does not mean it will fit in a 6.5 gallon tank. This is something I never knew. Thank you.
Yes, if you keep them with fish not small enough to be eaten.
