That's how a lot of fish stores do it - put one betta in each tank, not even taking notice to what they're being thrown in with. A lot of the time you'll see bettas in these situations with ripped, torn, and bitten fins.
April FOTM Photo Contest Starts Now!
🏆 Click to enter! 🏆
Thanks very much
What I don't understand is that The Betta's are in a seperate tank to all the other Betta's and they are in a tank with small fish.
A lot of people who end up with the wrong mix of fish thanks to the LFS end up thinking the same thing: "The fish seem fine right now, how could someone say they'll start fighting?" And most of those people have ended up with stable tanks for a few months, then one day they'll wake up and half their fish are either dead or missing.
It's always possible that something could happen with a mix like that.
A lot of people who end up with the wrong mix of fish thanks to the LFS end up thinking the same thing: "The fish seem fine right now, how could someone say they'll start fighting?" And most of those people have ended up with stable tanks for a few months, then one day they'll wake up and half their fish are either dead or missing.
It's always possible that something could happen with a mix like that.
Seconded. I hope it doesn't seem like we're being harsh, but you're one of a long line of people who come on here having been given bad advice. Its not your fault, but you are looking at some real problems with your tank - either in the next day, week or month (unless you're very lucky) you'll come home and find half your tank dead.
The best thing you can do now is look to rehome some of the fish - the betta is beautiful, I'd recommend picking up a small tank (3G or more) which you can still get cheap, a heater and filter and rehome him there. And take the angel fish back to the shop.
Have you read up on cycling? If you do opt to buy a new tank you'll need to carry out a fish in cycle, which means 50% or so water changes everyday-and buy a test kit that tests for ammonia, nitrite and nitrate as soon as you can afford one. Especially if you didn't cycle your 35 litre tank.
Like I say, I hope we don't seem like we're being aggressive towards you - most of us have made similar mistakes to you, and will do whatever we can to help you out and prevent any problems in your tank.