I’m new to saltwater and recently added two clownfish after cycling my tank for a few months. All levels were normal when I added them, and they’ve been eating well. Before tonight, this fish was swimming normally and breathing normally. Now, it’s at the bottom of the tank and breathing rapidly. Is this swim bladder? If so, how do I treat without peas? It’s 6 in the morning and I won’t be able to get any until later and don’t want it to die before then.