i don't think that will work out, sharks are pretty aggressive. a ten gallon wouldn't be big enough for both a shark and a betta anyway, the sharks get up to 6 inches long and they need 20 gallons or more. A ten gallon would be perfect for a betta and three or so cory cat fish though, albino cories are adorable!
My Current bettas:
Sullivan- Orange rose tail halfmoon male
Daisy- Mustard Gas (black and yellow) veil tail female
Milton- Teal butterfly halfmoon male (mom's betta)
DFTBA to nerdfighters working to decrease world suck!