Super Sad news: Mo died

We checked his water and the pH was right etc, we don't know what happened.
Think Charlie is a bit overwhelmed, he has been plucking his left leg

there are pins there, so I'm not sure when he would have plucked, but I am so sad that he has done this. Everywhere else on his body is ok.
I forgot to tell you.....
Axle ate his first fish!! So proud of him for actually catching one hehe.
We have been hand feeding him at the top of the tank. He swims up to where our hand is and rests his front feet on hand and eats the meat cubes. He seems very settled already.