Digestive disorders

Most digestive disorders in fishes are caused by parasite infections. However, not all parasites cause problems for fishes - some live in a symbiotic relationship with the fishes.

Symptoms and Types
The symptoms can vary depending on the parasite causing the digestive disorders, but usually include weight loss, lethargy and loss of appetite. Young fishes are especially susceptible to digestive disorders and can die before any symptoms arise.

Causes
Various living conditions which can cause digestive disorders in fishes include:

• Overcrowding of the fishpond
• Shipping methods
• Handling methods
• Infected food
• Stressful conditions

A very important consideration in carp nutrition is the activity of intestinal bacteria which assist digestion and can provide nutrients supplemental to the ingested material.