i donnot like the idea of tiger barbs with corys.. unless there are more places to hide then u can think of.. tiger barbs tend to be somewhat aggesssive fish and fin nippers.. they will do this to corys as well and mayke them stressed.. sometimes to the point that they will stop eating and eventually die. unless this is a heavily planted tank with lots of hiding places i don;t like the situation the corys would be in. then again i would never have tiger barbs in any of my tanks because of their high aggresion.