found my black tailed eretmodus cyanostictus, swimming upside down, not sure why, he was fine the day before. his stomach looked deformed. i seperated him into a livebearer holder. dosed the tank with melafix (its all i had for meds, figure why not) found him dead the next morning. im guessing bloat got him, but i dont know why. because none of the other fish that need spirulina in their diet are effected.