Without a clinical necropsy, it is hard to say--could be parasites, stress, Aeromonas, Pseudomonas, myopathy, etc. Keep an eye on the others, and make sure they are eating well, and I recommend weighing them about once a month with a gram scale (preferably one with 1/10 of a gram accuracy)~to reduce stress, you can bait them onto the scale to avoid handling.

[ Reply To This Message ] [ Subscribe to this Thread ] [ Hide Replies ]