I have a 3 inch green terror live in 1 20g tank alone. (yes, I'll get him a big tank later this year)I don't want him feel lonely, so I brought 6 head and tail light tetras 2 weeks ago.All of them are around 1 inch, I thought my green terror may chase them around but he can't eat them. Last night I put tetras in the tank, the green terror simple ingore them and these trtras also seems happy in the planted tank, so I went to sleep. This morning, I found two tetras were sticked on the filter, one died, half his body is missing, another almost dead, three others are swimming far from the terror. and one is missing. I spend 20 mins just can't find the missing one. can a 3 inch green terror eating a one inch tera completely? :-? by the way, the terror still looks hungry, and he finish his breakfast (10 min pellets) in one min.