Furuculosis disease

Furuncles (or boils) involving skin and/or muscle, progressing to crater lesions (usually restricted to the subacute or chronic phase in adult salmon) haemorrhages on the skin, mouth and fin bases (mainly of paired fins) darkening of body colour and pale gills.

Columnaris Disease (Saddle Back Disease)

starts out looking like bleached or off-color flat patches (not bumpy or cottony) on the body of your fish. As the infection grows, the surrounding scales also begin to look washed out. As the infection continues, it can completely eat away at the scales and skin of your fish. At this point, the skin splits, and the scales turn white and flake off. The disease can also form long filaments that are visible to the naked eye. If left untreated, columnaris will eat a hole in your fish.

Epizootic ulcerative syndrome (EUS)

At first, fish develop red spots on the skin. These lesions expand to form ulcers and extensive erosions filled with necrotic tissue and mycelium. This is followed by the development of granulomas on the internal organs and death.

Fin/tail rot

Fin edges turn black / brown.

Fins fray.

Base of fins inflamed.

Entire fin may rot away or fall off in large chunks.

Fins have white dots (if these are seen on the body it is possibly a symptom of Ichthyophthirius multifiliis)

Vibriosis - V anguillarum

Fish infected by V. anguillarum showed typical signs of a generalized septicemia with hemorrhage on the base of fins, exophthalmia, and corneal opacity

Luminescent vibriosis - V harveyi

Common in penaeid shrimp, the characteristic symptom is glowing of the body in the dark, and is associated with mortality of larval shrimp in penaeid shrimp hatcheries

Coldwater vibriosis or Hitra disease

Caused by Vibrio salmonicida. Typical external signs may include hermorrhaging of the skin, the area around the gills, and the vent. Internally, hemorrhaging may be evident in all the organs and at times, in the muscle. The liver may be pale.

Cotton mouth

Lips appear in shades of white or grey.

Clamped fins & Lethargy

Thickened Slime Coat

Left untreated - leads to Rotting Flesh and Death

Dropsy

Swollen belly - filled with fluids

Internal organs are damaged

Appearance of skin lesions

Left untreated - the fish may die

Tuberculosis

Also called Mycobacteriosis

The main symptoms are loss of scales, loss of color, lesions on the body, wasting, and skeletal deformities such as curved spines. Infected species are often emaciated and lethargic.

Bacterial Gill Disease

Because the gills are primarily affected, fish suffering from bacterial gill disease have respiratory problems, with visibly rapid or labored breathing and swimming close to the surface of the water as if trying to get air. They show signs of a lost appetite, with little to no eating.

Edwardsiellosis

Infection can cause organomegaly, ocular disease, rectal prolapse, ecchymosis, and erosions on the skin, inflammation of the gills, oedema, ascites, abnormal behavior, and haemorrhage throughout the body.

Epitheliocystis

Epitheliocystis occurs as a non-proliferative or proliferative disease, characterized by cysts in the branchial epithelia of the host. Clinical signs may include lethargy, flared opercula, increased mucus production and rapid respiration. Cysts may appear as transparent white to yellow capsules on the gill filaments

Aeromoniasis

The Aeromonas bacterial infection affects multiple systems in the fish's body, resulting in such symptoms as:

Enlarged eyes (exophthalmos)

Accumulation of fluids in the abdomen (ascitis)

Renal dropsy (kidney damage)

Ragged fins.

Pseudomoniasis

It is an acute septicemic bacterial disease, affects the most species of fishes. The disease is characterized by septicemic picture and high mortality in acute cases, but ascites in chronic cases.

Flavobacteriosis

Bacterial Coldwater Disease

Infected fish are typically lethargic, will be high in the water column and gasping for air at the surface and align near and into the incoming water, all of which are obvious signs of respiration difficulty.

Rainbow Trout Fry Syndrome (RTFS)

Common symptoms include reduced appetite, dark skin pigmentation, necrosis of adipose fin and caudal peduncle, with exposure of the underlying musculature and even the vertebral column in chronic progression of the disease.

Streptococcosis

External clinical signs for this deadly disease include: marked hemorrhages, cornea opacity, spinning near the water surface, erosion of the caudal fin, and exophthalmos (eye protrusion). Fish may also show a 'C' or 'S'-shaped body posturing, lethargic behavior, and bloody abscesses around the mouth.

Renibacteriosis

Also called Bacterial Kidney Disease (BKD)

External Signs: lethargy, skin darkening, protruding eyes and blood-filled blisters on the flanks

Acute Hepatopancreatic Necrosis Disease (AHPND)

Clinical signs include a pale-to-white hepatopancreas (HP), significant atrophy of the HP, soft shells, guts with discontinuous, or no contents, black spots or streaks visible within the HP (due to melanised tubules).

ENTERIC RED MOUTH (ERM)

Common features include exophthalmos (“pop-eye”) with blood spots in the eye, haemorrhagic congestion of fins, pale gills and vent distension. The presence of vascular lesions (hyperemia, ecchymotic haemorrhage) around the mouth are classic signs of this disease, although these are found infrequently.

Piscirickettsia salmonis in salmonids

Salmonis in salmonids can result in anemia, kidney necrosis, enlarged spleen, hemorrhages, nodules or crater-form lesions in the liver, dark coloration, skin lesions, lack of appetite, anorexia, and lethargic swimming activity.

Necrotising hepatopancreatitis (NHP) in peneaids

Signs of the disease often include lethargy, emaciation, heavy protozoan or bacterial fouling and a reduced growth rate. Gross pathological signs are - soft shell, flaccid body, black gills, an empty intestinal tract, degenerated or atrophied digestive gland (hepatopancreas), which appears pale to white, and black (melanised) streaks in the hepatopancreas.

Chlamydia infection

This causes epitheliocystis, a skin and gill disease