I also bought a little beta tank, that said it was the "perfect into to fish keeping" and came with "BONUS: Betta Food, and Water Conditioner". As soon as I got all of this home and did some research I realized this tiny little container was not going to cut it. Also one thing Petco doesn't tell people, is that bettas should really have a HEATED tank. So I picked up my boyfriend from work, broke the news that I bought a damned fish, and went to town to get supplies. I came home with a 2.5 gallon tank, a new heater, some lovely decorative rocks, two LIVE plants, frozen brine shrimp, baby tropical fish food, and some dried blood worms. OH and my own real bottle of water conditioner since I'm returning the crap betta tank kit I bought in the first place.
The tank I'll be returning:
And the tank that I set up on my own, because Petco are liars:
So I've got my tank all set up, and my heater is in there, and I've got my little baby betta all settled in. I fed him a couple baby fish pellets and he has literally come to life, just in the last few hours. He was pretty lethargic in his tiny Petco cup, but now in a warmer, bigger container with some food he is thriving.
Everything I've read online says this little guy is going to die, but after shelling out over $40 to provide him with a proper habitat and food, I'm determined to fight the odds.
(also for the record I don't really know the fishes sex, but I'm going with male for now, we'll see)
Here he is! He is so tiny it was hard to get these pictures! (Also don't mind the bubbles, new tanks tend to be really bubbly for a few days)