Something is really, really wrong in the ranchu QT. Yesterday, Sayuri had a bright red blood spot on her belly like where one of her pelvic fins adjoined. I attributed to breeding injury and was going to get a breeder net this morning to put the male in. This morning, the red spot is bigger, the beginning of the fin is red as well. There is also now blood in her left pectoral and a small mark on her back. The bleeding in the fins is not streaking, they look like they're filling with blood. And the spot on her belly in about 1cm in diameter now. The only thing I can think this sounds like is septicemia but the spot on her belly looks kind of raw and she's totally fine behaviorally - eating, active, interacting with me. Is it really possible that a fish will have septicemia this severely with no other behavioral signs? The only issue that has been ongoing in the QT is a very small nitrite reading. It's less than .25ppm, the result isn't even purple, just a darker blue, and I've been battling it with water changes and Prime. I'm going this morning to get another QT to put her in and I guess start medication because I'm not sure what else this could be. I'm just looking to find out if septicemia can really present like this with no other behavioral symptoms? And what would cause her to come down with this when the water quality has been good and I've been managing the nitrite reading?