Would These Fish Be Ok Together And In A 260 Lite Tank. (68 Gal)

[england]

redhooks are silver dollars

http/freshaquarium.about.com/cs/characins2/p/redhook.htm

 

[Unseen]

ah so are there different types? the one on torpical fish 4 u (where i purchase my fish) are a different colour and it mentions a size of 20 cm as opposed to the redhooks which grow to 10 cm. red hooks will probably be better as they are smaller