Lethargy

Not eating

Slow or rapid breathing

Loss of color

Discoloration or splotchiness

Spots

Scars

Ulcers (open sores)

Loss of scales

Scales sticking out or standing up

Swelling or bloating

Weight loss

Floating, drifting, or swimming erratically in unusual positions

Tumors and cystic growths

Puffy and/or fuzzy growths