do you think i would be able to put two cichlids in the same tank.. i have a 40g and i dont know if it would be too cramped for them or not?? i would be buying some of the smaller sized cichlids... and what would a good algae eater with them.. my manager at work told me a chinese catfish would be aggressive enough? so just some opinions please oh yes and if i get the small ones what other fish would i be able to put in the tank that the cichlids wont eat/attack?