WWW.FISHYPORTAL.COM

Aquarium tropical fish and fish diseases


HOME | FISH DISEASE DIAGNOSTICS | FISH DISEASES | FISH NEWS
 

Hydra


Hydra

Latin name: Hydra
Other names:
Pathogen: parasite
Symptoms: Ulcers

Open wounds on the body.

Description:
Hydra is a predator which is introduced into the aquarium with feed and other water bodies (plants, snags, etc) taken from ponds. It is 2-3 mm in length. Hydra has a circle of tentacles around their body opening. It attaches itself to an object in the water with the so-called sole. It moves by means of tentacles. Hydra loves light. It is a voracious predator that feeds on fry. Hydra waits for its prey while attached to an object in the water. With tentacles spread apart, it does looping movements while searching for a prey. Hydra catches the prey by means of the tentacles and then paralyses it by special cells called nematocysts. During the spawning period it can eliminate all fry.

How to cure:
Once Hydra is identified, dim the light so that only one illuminated spot is left (this can be achieved by pressing a glass to the side of the tank). Hydras that will accumulate in this place should be disposed of. Young Gourami fish also help to eradicate hydra.

Medicine:


Prevention:
It is necessary to carefully check all feed before introducing it into the aquarium.

Fish susceptible to the disease/disorder: