My tank is a 29 gallon tall. the 2 1/2 inches (two and a half inches) is how big my dalmatian molly is. She is the only adult I have left. My other adult died after giving birth for the second time. I don't really want to get more mollies so I was trying to find something that would go with them. I need to let my tank age a little more though. Tried khuli loaches and they died from a combination of nitrate and ph problems and I believe stress. I am going to wait until my water conditions stay level for at least two weeks. Tank had only been set up for just over three months. I keep changing things around, i.e. decorations, plants, lights. Think I have things pretty much the way I want now.
My ghost shrimp are making babies like crazy. I have found several teeny, tiny ghost shrimp. I started out with 7 adults. Now I have many in all different sizes from brine shrimp size up. I was really surprised. The molly doesn't bother the shrimp or the snails. She did grab one of the khulis but dropped it really quick. She doesn't bother the two molly fry that survived. One even tries to bully her. She did chase her grown tank mate though.
Here is my current stock
Mollies x 3
Nerites x 3
ghost shrimp x many
Here is what I am thinking of adding to my tank.
Neon tetras x 10
khuli loaches x 6
Spiny nerites x 5 (if I can find them)
Hatchet fish x 6-8 (not sure, I want something for the top of the tank but I am afraid of how jumpy the hatchet fish are said to be)
I do need something to stir the sand but I am not really a fan of catfish types.