Aquarium Fish Health Management Quiz

Study Notes

Importance of Fish Health Management

Increased financial investments in the ornamental fish sector drive the need for effective fish health management.
Awareness and knowledge in fish health management are crucial to minimize economic losses in the industry.
Fish diseases arise from complex interactions between hosts, pathogens, and environmental factors.

Types of Fish Diseases

Two primary categories of fish diseases: infectious and non-infectious.
Infectious diseases can spread from one fish to another, caused by pathogens like viruses, bacteria, fungi, or parasites.
Non-infectious diseases are individual-specific and often result from environmental stress or nutritional deficiencies.

Infectious Diseases

Viral Diseases

Koi Herpes Virus Disease (KHVD)
- Caused by the Koi Herpes Virus.
- Clinical signs include gill infections, sunken eyes, red and white patches, and pale skin blisters.
- No effective treatments available; preventive management practices are recommended.
Lymphocystis Disease
- Caused by Iridovirus.
- Recognized by cauliflower-like nodular white swellings on the body and fins.
- Management through better fish care practices.
Spring Viraemia of Carp Virus (SVCV)
- Caused by Rhabdovirus.
- Symptoms include hemorrhages in the skin and gills, darkening of the skin, swollen belly, and eye protrusion.
- Maintains good water quality and nutrition to reduce stress.
Herpesvirus Disease (Carp Pox)
- Caused by Herpesvirus.
- Characterized by ulcerated lesions and the presence of plaques on the skin surface.

Bacterial Diseases

Ulcer Disease (Aeromonas sp.)
- Symptoms: Skin lesions with blood, shallow open sores, eroded fins, and mouth.
- Treatment includes pond disinfection with KMnO4 at 5 mg/l.
Fin and Tail Rot (Aeromonas sp.)
- Clinical signs: Whitish fin margins, putrefaction, and reddened areas at fin bases.
- Treatment involves antibiotics, including Terramycin (100 mg/kg) or Sulphadiazine (100 mg/kg).
Columnaris Disease (Flavobacterium columnare)
- Identified by grayish patches on the head and dorsal surface and discoloration on fins.
- Treatment involves a dip in 500 ppm KMnO4 for 2 minutes.
Mycobacteriosis (Mycobacterium fortuitum)
- Symptoms: Anorexia, emaciation, exophthalmia, and gray-white nodules on internal organs.
- Antibiotic treatment options include Oxytetracycline (50 mg/l for 15 minutes) and Nifurpirinol (66 mg/l for 15 minutes).
Dropsy (Aeromonas hydrophila)
- Clinical signs include distended abdomen, scale protrusion, and mild ulceration.
- Management includes a dip in 5 mg/l KMnO4 for 2 minutes and pond disinfection with KMnO4 at 1 mg/l.
Bacterial Gill Disease (Myxobacteria)
- Symptoms include necrotic gill tissues and fusion of gill filaments.
- Treatable through bath treatment with alkylsp.benzalkonium chloride at 2 mg/l for 1 hour.

Description

Test your knowledge on the health management of aquarium fish, focusing on infectious and non-infectious diseases. This quiz will cover the importance of disease awareness and management in the ornamental fish sector, essential for sustaining the industry and minimizing economic loss.