Hi all, while I was away my boyfriend decided to move my new guppy into a 29 gallon tank with 3 small angelfish and 4 dwarf cichlids, and when I came back a couple hours later I found my guppy dead with his tail ripped off. Which fish or fishes do you guys think killed my guppy? The 3 angelfish are very small (1 inch max) and the dwarf cichlids (a pair of blue rams and a pair of kribensis) are about 2 inches. There is also a school of cardinal tetras in the same tank. Are the tetras in danger too? Should I move them? Thanks for the help.