I was thinking of getting another leopard gecko. I already have a female hypo tangerine that I got back in March. She lives in a 20 long tank. Would it be possible to put another leopard gecko in with her. If so, are there any sort of introductions I should do with them. Will they fight?

I am worried about bullying. I went to a petstore the other day and they had a tank with two lg's in it and one was big and fat and the other was skinny and frail looking. I asked what was wrong with him and they said that the other would not let him eat. It was very sad, so I don't want that happening to Chibi or any new gecko I get. If I can't put another gecko in with Chibi I don't want to get one just yet then. I'm going to a reptile show in November and was hoping to get the second gecko there.

Any opinions, suggestions, advice, concerns?