An unidentified tumour attached to the body
wall, and affecting no internal organs.
This fish is a male, so there
may be a link to the gonads.
Ovarian tumours in the latter stages show a distinct anal
swelling not the fat round appearance of a fish carrying eggs
Known
as cell tumours, nothing is known of their origin.
They grow at a
staggering rate. These pictures show a cell tumour which came from nothing to
such a large size in only 6 weeks.
They are always fatal. Once a tumour
shows itself, the fish is beyond treatment.
