I personally keep my bettas in 2.5 gallons, I just think AT LEAST 1 gallon..
What makes me mad is the half gallon tank divided in half.
Here look. They sell it at Petsmart and Petco.
I do like the black. That's pretty cool. It's the size that concerns me.
Went through the reviews a little, out of the three I looked at, two made their point it's too small and recommended something else. One said it was awesome. :( It's not awesome at all. I saw it at the store-they had it set up with a male on one side and a female on the other, it was sad. One was dead, and one had a snail on his side.