I have this little algae-sucker guy that clings to the walls. I thought he'd help keep my tank clean. Should I take him out?

depends on the type of fish, do you know what the type is?

Nah, sure don't. I got him from nooppee.
I think he might be starving... he just started swimming all around panicing.

I got an algae sucker too. He only lasted one week. I think that my 3 goldfish freaked him out so he wouldn't stick to the glass because he was so scared. Went back to the good old fashioned magnet!!

You might want to try algae wafers as a supplement. My algae eaters love them.

Once again like i've said most fish need a special diet otehr then algea and algea wafers... They enjoy cucumber alot aswell... and some otehr stuff...

You most probly have a common pleco.... which isn't good.