I have a 60cm x 30cm x 30 cm tank. Its stocked with 5 snails, 5 shrimp, 6 minus 2 now neon tetra, two bala sharks, and 6 guppies. I have been feeding them regularly in the morning and evening and have noticed since I added the guppies the bala sharks have been hiding and not eating. I have also notice that my plants are being snipped at the roots. Today I returned and found two of my neon tetras are not just dead but eaten... I quickly looked around the net and read that sometimes ballas will eat smaller fish so i have pulled them from the tank and am keeping them in a small container for the time. Should I get rid of them completely or could the guppies in fact be the problem? Before they were added the Ballas seemed to get along just fine with the tetras.