Purchase/Disease Clamped tails, heavy breathing, swollen gills and lack of color are the obvious signs of a weak Ram. Rams are well known for undergoing respiratory stress once introduced to a new tank or during shipment.
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One of the reasons some Rams are 'difficult' to keep is due to the fact that, depending on where you live, a large number are bred in soft water in south-east Asia. This makes them prone to gill disease once placed in harder water (and possibly spurred during shipment); since gill disease goes unnoticed in its early stages, the fish look fairly healthy on arrival, but eventually keel over if treated too late. ... In addition to this, Rams have been know for carrying internal bacterial parasites.