Oh no. Are you saying you provided a live plant as a food source for your Betta? ACK. Bettas are carnivorous, they absolutely need a flake, pellet, or live/frozen food to eat every day! They will ONLY eat plants to avoid starvation. =(

I advise you do a heck of a lot more research on these fish before you get any more. Check out http://www.bettatalk.com, PLZ!

How is your Betta in the pickle jar doing? That's a very small container, I hope you're doing 100% water changes every day. Are you using dechlorinator, or aging the water when you change it? Are you feeding him a high quality tropical or Betta pellet 1-2 times daily? One Betta needs preferably 2+ gallons to him or herself. Smaller tanks can be used, but those need multiple water changes per week. Never, ever keep more than one male in one tank, no matter the tank size - they will kill each other. Similarly, never keep a female in a tank with a male, the male will kill her and/or you will end up with babies and ripped up Bettas. I do not recommend your keeping females together, it is better suited for people experienced with Bettas & those who understand what they require to leave peacefully in a community.

I'm sorry if I seem obsessive, but I love these little fish. I breed them & raise them, and I promise that if you care for them they will show you tons of personality and entertainment... not to mention how gorgeous they are.