I added 8 dwarf rasboras to my 36 gallon planted yesterday. The tankmates are 10 rummynose tetras, 6 CPDs, and some cherry shrimp. Today, I came home to find that only 4 dwarf rasboras had survived the night. There are no bodies, nothing. I wouldn't be shocked if I had lost one or even two, but what could I attribute losing half to?