I would also point out that most of the other information on that website is not accurate, they can be fussy eaters and need a meaty diet. They do not eat algae. They do not compete well for food so would not recomend keeping them with loaches. They have also been succesfully bread in captivity. I would not reccomend keeping them in a 10 gallon tank you may stunt their growth. A few in a 30 gallon should be fine.