Well I'm not sure on albinos but I could do a trio or to of Aphyosemion Bitaeniatum or Aphyosemion australe.
Yes they will breed in a 40lt tank its what I used. Breeding them is fairly simple, they will lay around 5-10 eggs a day, except on weekends :lol: . They will lay in javamoss, plant roots or a mop made of wool. then you just have to remove the eggs and place in a small container of water. once the eggs hatch in 10-14 days feed them micro worms or BBS and your away.
Don't think I missed anything.