A. Causes: Trichodina spp., Trichodinella spp., And Tripartiella spp.
B. Characteristics of pathogens:
- This disease is a protozoan from the ciliate group, round, symmetrical and lives in freshwater, brackish and marine ecosystems.
- Trichodina spp. measuring 45-78 μm,
- Trichodinella (24-37μm) and Tripartiella measuring more than 40μm.
- Has a disc denticle ring, this ring functions as a sticking device.
- Parasite hosts are all fish seeds that live in fresh, brackish and sea water.
- Infecting the skin, fins and gills of newly hatched fish until the age of 1 month.
- This group of parasites is generally more commensal than true parasitic, because it only eats dead / destroyed fish skin cells. However, due to the structure of a hard sticking device (chitin), it often results in irritation and injury to the skin of the fish.
- Fish deaths resulting from this disease will reach 50% of the total population, mainly due to secondary infections by bacteria and / or fungi.
C. Clinical Symptoms:
- The body color of the fish becomes pale, the appetite of the fish decreases, the body becomes thin, restless and the movement of the fish becomes sluggish.
- Fish often rub the body on the surrounding objects (itching).
- Increased breathing frequency and fish often jumping to the surface of the water.
- There is irritation of the skin epithelial cells, excessive mucus production so that it is brownish or bluish.
- There has been damage, tapping or falling out.
- Visual observation of behavior and clinical symptoms that arise and / or increase the frequency of new water changes.
- Fish attacked by trichodiniasis with low prevalence and intensity levels,
Fish treatment can be done with several types of disinfectants, including:
1. Immersion of fish in kitchen salt solution (for freshwater fish) at a concentration of 500-10,000 mg / liter (depending on the type and age of fish) for 24 hours;
2. Herbal treatment: using Garlic (AlliumsativumL) by: the same as for controlling ichthyophthiriasis