In my experience multies stay pretty close to their shell bed, only rising about 8 inches from the substrate. With the height of the 55 you have them in, you should consider some top water column swimmers so as best to utilize the space available. Unless you have a lot of territorial dividers you are probably going to want to stay away from daffodils, calvus/comps, any sort of predatory tang., and bottom feeders like synodontis. Calvus are great fish, but if you want your multies to breed you can forget about the fry surviving. Comps and calvus evolved to do one thing extremely well - eat fry. Daffodils and brachardi are nice looking but having a pair in a tank not set aside for breeding is asking for trouble. Bottom feeders should never be kept with multies in my experience because of the space problem. Shell dwellers spend all of their time at the bottom and have a very difficult time escaping predation. Any type of scavenger can potentially kill and eat a multie.
Ideally you want something that sticks next to rocks or swims at the surface. I noticed that you picked up some julies, which is a great choice considering your situation. Another good choice would be smaller species of cymps. Australian rainbow fish are another great addition, although they obviously aren't from the biotope lake.
Ideally you want something that sticks next to rocks or swims at the surface. I noticed that you picked up some julies, which is a great choice considering your situation. Another good choice would be smaller species of cymps. Australian rainbow fish are another great addition, although they obviously aren't from the biotope lake.
