what i dont have i have access to through my father, he's been breeding forever. i do have the metronidazole. not sure about the others. are there any negative affects if you medicate the fish without being sure of the cause of the white feces?? thanks for the help. also, the answers to your questions in order:he has not eaten well for about two weeks, not at all for the past 2 days actually. the problem began about two weeks ago. i normally feed all of my fish 4 times a week, a mix of hikari pellets, shrimp, a gelatine food my father made with sirloin and shrimp in it, and the ocasional feeders.i have had this fish for about a year but purchased him at about 6". 150 gallon tank, 81 degree water, ph 6.8, very well lit, filtered, and airated. i keep him with a jack dempsey, flowerhorn, a large mouth, and a blue channel catfish. no other symptoms but my father told me to look out for swelling. says when you see that its usually to late. well thankyou for any further input.