So, what you're saying is....if someone doesn't have atleast a 1 gallon tank ready and set up for a betta..then they shouldn't bring a betta home...even one that has been sentanced to one of those retched little cups?
So, if they don't have the "proper" setup...what they should do is let the betta stay at the store, rotting away in about a cup full of water..as opposed to bringing it home, keeping it in a 1/2 gallon jar, with daily water changes, until they can afford or find a suitable tank for the betta?
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emmmmm...I don't see that happening for 1, and for 2 I don't think it's wrong to do that. As long as the fish is being cared for (fed and water changed to keep him healthy) I don't see the problem.
I'm not saying keep the fish there indefinately..but a week or 2 or even a month isn't going to kill it...unlike a dirty cup..that very well might.