I have 2 Bala Sharks and recently one of them hasn't been eating the flake food I've been feeding them. She (I've decided it's a she ) usually sucks in a flake or two and then spits it out or passes it through her gills all chewed up. Maybe she just got tired of the taste? She still eats frozen bloodworms but I only give them those once a week because the other bala REALLY loves them and tends to chase her around the tank when I feed bloodworms. I haven't changed foods for a while so it's not that she's not used to the food. Water tests show nothing out of the ordinary ( 0 ammonia, 0 nitrite, ~30 nitrate) and she looks fine physically.
Any ideas?
Any ideas?