I got two turtles that were about an inch or an inch and a half long a few months ago. Over that time one of them has been active and growing, eating anything you put in front of it. The other died today. It never ate much, had to have food put directly in front of him, and would maybe bite off half a pellet at a time. He never grew, and was the same size today as when I got them. He was always shy and hiding from anyone who approached the tank. I always made a great effort to make sure he had food separate from the larger one, but he never ate much anyway. Two days ago he looked different, slower to react, etc. I raised the water temp from about 78 to 82-84. And Yesterday morning I noticed that he had stayed "sleeping" half in and out of the water all night, without moving even when I approached the tank. I picked him up and put him on the dry basking spot, he was moving but very languid. I came home for lunch and noticed he had stayed in the same spot the entire time and was withdrawn into his shell. At this point I feared the worst. I put him in the water he swam around a bit and finally rested on a lettuce leaf (as he has been prone to do since we got the turtles). I tried feeding him chicken, and pellets but he would eat nothing. Today he was dead on the floor of the tank under water.
I am inclined to think he was sick, but there was clearly something wrong even when he didn't behave strangely, since he never grew any bigger while the second turtle is 2-3 times the size they were when I brought them home.
Recently the tank has started to grow algea, is this possibly related?
I explained that the turtle died to my son (he's four and they are 'his' turtles) and we buried him in the garden. My son naturally thinks we should get another turtle because the one left needs a friend (and as a side note pointed out that the minnows can't count as friends since the turtle etas them, and people don't eat their friends!). So basically I would like to know if companionship matters to turtles, and if it would be beneficial to get a second turtle again at this point. Obviously I will wait a bit and see if there are any changes in the current turtle for illness, and completely clean out the tank / change the water etc.
