I agree with ewurm....eventually you might have a problem. I think your main problem is going to be with the clown knife...not the lima. The clown knife grows very fast....the shovel and loach, not so fast. I haven't had any problems YET. But that is just me. I bought all of my fish as babies for my 125. My hopes are that they grow together, there won't be an issue. Its a little different introducing a new fish to an aquarium because all of the fish will be a little stressed and react differently. I think tank size will play a major role in the outcome. Which you have not mentioned.