I was hoping someone would have some advise on mixing killie species. I currently have a 10 gallon tank set up with three C(?). zonatus, two males and a female. My question is would if be possible to add one other species of killie with them? The tank has a lot of java ferns in it, which is how I can keep two males together. The zonatus spend most of their time near the bottom of the tank. I was thinking of adding either A. striatum or A. ogoense. I know the striatums tend to stay near the top but I'm not sure about ogoense. If anyone has any experience they can relate I'ld appreciate it.