I just started playing Minecraft again after a long time. (Haven't played since before the aquatic update.) I built a small aquarium behind my bed in my house and put a few fish in it. They're all stuck in the bottom left corner. It's not a big one. Only a 2x5 and 4 blocks high. Is it to small for them to move around and I need to make it bigger? Or is this just a normal thing for it? I'm on ps4 too so I'm still trying to get used to the change just from that.