Hello, about 10 days ago I purchased a 5 inch male red tiger motaguense male from a lfs, I put him in a 65 gallon quarantine, anyways he started eating day 2, I've been giving him northfin predator pellets and spirilina pellets, but strangely I notice he hasn't really put on any size thickness wise, I find him still very skinny and skittish , wondering if anyone had any advice? I'm afraid it might be something internal

