I have had my 55 gallon tank running for 4 months now and had jewel cichlids in their. I recently got rid of them cause they were just hiding in caves and not being social what so ever. So now I just went out and got 6 green tiger barbs, 6 black skirt tetras, 3 australian rainbows, 6 emerald cory's, one kribensis, and a chineese algae eater. The ques is can I have room to upgrade maby the rainbows to six total, or maby a couple more barbs or tetras? Any and all responses are appreciated thx.