They really don't each much so maybe you don't need to be concerned. I read somewhere that if you feed them every day you're actually spoiling them. The book said that every other day or every two days you should give them 3-4 pellets of their food, so maybe you don't need to worry.
We have a Betta and he's about 5-1/2 years old now. (I don't listen to the book though and feed him every day)
He is THE strangest fish you've ever seen...wags his back end like a dog and gets all excited when you pay attention to him. All you have to do is say "Hello" in a really silly high-pitched voice and he goes crazy! If you stick your finger in his bowl he'd swim up and rub his back against it.
He lays flat on his side at the bottom of his bowl a lot - looking like he's acting like a dog - half the time he looks dead.
And he's well-traveled...goes on road trips when we can't find a "fish-sitter"...he sits in the cup holder in a spaghetti sauce jar with holes poked in the top!
And Angel's a really weird looking fish too - he's purple and pink but in the last 6 or 8 months he's been turning a really funky blue color. Old age?
I don't know much about these fish except this one won't die...we forgot him once and left him home and went away for 9 days...boy was he glad to see us when we got home!!
I sure do miss having a dog though...

Ours died a year and a half ago and I still miss him dearly. Hopefully we'll get another one after we move. Strange as it sounds, puppy-breath is one of my favorite smells