Looking to get a fish.. Suggestions?

Virus

I have a one gal, a 5 1/2 gal and a 10gal at hand. I'm looking into fish like knife fish or gobys or something. I'd like to fill the 1 gal but i think those fish need larger. idease and suggestions please.

(excuse my grammar.. going through a possible fish loss.. im a bit down..)

Twistersmom

Well, I would recommend moving the Goldfish into 10 gal. Is the Oscar gone? The 5 1/2 would make a great home for a betta.
Dessert gobies and peacock gobies stay small and could live in a 10gal.

Virus

No, my Betta is very ill. I purchased him yesterday. My Oscar will be moved into a 35 gal but he's kind and can actually live with my Goldfish(there's one with him now I purchased to feed him..lol) I think I'm looking into a bottom-dwelling fish for the 35gal because the other Goldfish and the one with him now will be moved to their own 10gal. What would a bottom-dwelling fish (or two) that gets larger(will be moved to a 75gal in a month or so with my Oscar)?