Behavior Problems with Amano Shrimp
So I have a ten gallon with 6 CPD 2 cherries, 1 bamboo shrimp, and 1 amano. Half of the tank is full of plants so there are lots of places for hiding. The cherries and CPDS were added recently. The tank started as the amano with two mystery snails and 6 White Cloud Minnows. The White Clouds were recently given away and still healthy. The Amano has lived in this tank for almost two years (old I know)
About two days after the arrival of the new shrimp the Amano got very very territorial. He pushes the cherries off his moss ball (literally runs up to them and pushes them off with his arms.) He refuses to eat his algae tabs, instead he runs around and gathers all of the sinking pellets for the CPDs that he can find and carries them around for an hour while he eats them. While he is picking them up he flies around pushing fish out of the way. (I wish my pictures weren't blurry, it actually looks quite funny)
Since he is so old, and it was originally his tank to start, I want him to be happy - but he seems crabby. They are definitely all fed enough, maybe even too much. I know this may seem dumb, but the Amano and his tank mates were my first fish, so really I am still pretty new to this.
Any reasons why he is acting like this, how to help him be a bit happier, anything would be greatly appreciated. FYI if the solution is to move him out, I only have a 2g hospital tank on hand and my DH will have a heart attack if I buy more fishy things.