i have a 30 gallon setup its about 62x38.5x45cm 30 gallon tank with plenty of rocks and ornaments on the bottom with cichlids 2 x convicts 2 x re forest jewel 2 x auratus 2 x acei 2 x soulosi 3 x bala sharks 1 x blue guarami (adult full grown) 1 x angel........things seem ok all the species seem to be keeping to themselves they already have a heirachy thing going so tend to stay away from fish that are higher than them on the pecking order its like the bala sharks and clown loaches are exempt from attack and are allowed into they territory's but if the cichlids do they are immediantly chased away is this because they dont see the sharks and loaches as a threat ? (im only fairly new to owning an aquarium) as the fish are still only young im going to upgrade the tank when they're a little bigger