Buying this product only supports the selling of this product. If it's a bad seller, they'll stop producing it.
These companies do the industry a grand disservice by promoting these ridiculous combo systems and "tank" sizes. They do little to educate the consumer about the care of these animals and the consumers are none the wiser. It's unfortunate.
A pair of ADF requires at least a 5gal tank size - and that's the absolute minimum. The size of this "tank" is ridiculous - .5gal is NOT an aquarium - it's a holding cell and they shouldn't be sold. Nor should "Fish" bowls, for that matter.
Those of you suggesting a Betta, please follow the same advice. The only reason these animals are sold in the manner they are, is because they breathe oxygen from the surface, not the dissolved oxygen in the water. They're not as effected by the Nitrogen cycle as other fish. They can handle more waste/Ammonia, but they still become susceptible to disease, because of it, and will die if not properly taken care of.
You'd be surprised at how active a Betta or an ADF actually is, if kept in proper conditions. I house a Betta in a 20gal Long tank and it utilizes the entire tank... not just a .5gal portion of it. It's actually quite active, when not sleeping.
The only reason your fish/ADF might seem inactive/boring, is because it doesn't have any room to move. It's in a holding pattern, due to the size of the tank.
Please use caution and if you are going to buy this tank, please follow the advice that many are giving... upgrade to at least a 5gal tank. The frogs will thank you, and you'll actually find that the frogs are more interesting, given more room to move around.
Males get about 1" in length, while females get about 2" in length, and depending on the conditions you keep them, they could live for quite a long time.
Here's a good profile on them:
Here's info on the Nitrogen Cycle, if you want to do things right:
If you want frogs, but don't want the hassle of dealing with cleaning the tank or find them boring after a while, etc, just do the following:
1. Buy a cheap plastic tub from Target (maybe 10-20gal worth).
2. Place it outside in your yard somewhere and fill it up with water (preferably dechlorinated water).
3. Add some aquatic plants and maybe a few rocks.
If doing this in Summer, you'll have frogs making a home in your tub in no time. I had done this in the beginning of Summer, just to grow more aquatic plants for my tanks inside. The plants are doing well, but now I have about 100 tadpoles and an adult frog living in my tubs (I have 3).
Try it... you've got nothing to lose, except for the cost of the tub & a few aquatic plants (try Red Rooted Floaters, Frogbit, Duckweed or even Water Sprite).
I haven't had to take care of anything out there and just re-fill the tubs every now and then, if it hasn't rained in a while. The tubs actually get quite hot, so it's pretty amazing what these tadpoles can handle in terms of temperature. Seems like upwards to 90'F.