Hi! I have a 55 gallon freshwater aquarium. My German Blue Ram is sitting under a piece of driftwood at the bottom of the tank. She (I think it's female) also has a bloated belly and red veins bulging slightly from it. This occurred with 2 danios of mine last week but I thought it was because of high ammonia levels in the tank. I lost both danios. I checked the ammonia levels just now and they're fine. Does anyone know what this is and what I should do? I should also note that the fish is rapidly opening and closing it's mouth. Thank you, please help!