Raphaels might get a bit too big for a 10 gallon. Also, if you get a young one, and you give it the hidey holes it needs to be happy, you'll have to feed after lights out, and it will be years before you see it more than occasionally.
If you don't mind secretive fish, though, try Oil Catfish, Tatia perugiae. They can be trained to come out to eat frozen bloodworms.
Alternately (and again somewhat secretive), try as Clown or Ringlet Pleco (Panaque maccus). This is a gorgeous little critter. If you use a fair amount of well boiled driftwood as the main decorations in your tank, skip the plants (or stick to the low light standbys of java moss, java fern, and anubias), arrange it so that there are two or three caves, and keep the lighting dim in the tank (around 5 watts during the time of day you'd most want to see your fish) and off in the room, you could propbably keep one of those successfully.
If, on the other hand, you want to go with something a bit more active, maybe a small shoal (6 to 8 ) of one of the dwarf cory species (C. pygmeus or C. hasborus) would work for you. Just use a sand or small, smooth gravel substrate (Eco-Complete or Onyx would be ideal if you plan on planting), and give them some plants to hide in and a hunk of driftwood or a small rock cave or flowerpot to chill out in, and you'll see them flitting around the tank quite a bit.
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