EcoRx - Anchor Worm Control
Regular observation of your koi and goldfish will allow problems such as parasites and bacterial or fungal diseases to be detected early.
Be familiar with your koi or goldfish's normal shape, size and color as well as swimming habits.
A change in these factors may signal a problem. The problem must be identified in order to know the steps to take for treatment with the proper medication. Treating for a parasite, bacteria or fungus requires different medication.
Every pond owner with fish, at some time or another, will probably have to medicate their pond.
Though Koi are extremely hardy, it is very important to keep a watch on their environment to keep them at their healthiest.
Attention should be paid to the quality of water and balance of the pond (i.e. pH levels etc.). However, if problems do occur, the first step is to remove the individual fish or decide whether to treat the entire pond.
It is sometimes difficult to be aware of a problem with a koi or goldfish until its too late.
Be aware of your Koi's behavior patterns so changes can be detected early. A change in your Koi's behavior is usually the first sign that that your Koi are stressed or ill and may need some type of koi medicine or treatment.
Instead of trying to catch your fish to medicate them, treat the water they live in.
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Anchor worms are external copepod parasites that infest koi, goldfish and tropical fish. They are not true worms and are classified as crustaceans because their outer body is made of chitin, the same material found in crab shells.
The female anchor worm has a long body up to 25 mm long (1 inch) with anchor-like appendages at the head. The female attaches to the fish by burrowing through the skin (males die after mating). The anchor becomes firmly embedded into the skin, muscle and organs of the fish. The adult female looks worm-like with two sacs (egg cases) that form an upside down "Y" hanging from the fish.
A single female can produce hundreds of eggs and the eggs hatch in about 3 to 5 days depending on water temperature. The free-swimming parasites then molt several times before reproducing.
This easy-to-use liquid interrupts the parasite's life cycle and reproductive process, effectively controlling the spread of anchor worms.
Symptoms:
Infested koi and goldfish can be seen with whitish, black or gray worm-like threads, about ¼ inch long, attached to the skin. The "worms" can become coated with algae and appear green. Trailing at the rear of female parasites are two long, tube-like egg sacs. Anchor worms can be found anywhere on the body of the fish, including the eyes and fins. Raised red ulcers may appear where the worm attaches to the fish. Secondary bacterial and fungal infections may occur at the site of attachment.
Compatibility:
For use on ornamental fish only. Not for use in commercial food fish production ponds. Toxic to aquatic invertebrates.
Frequently Asked Questions
Can I give my fish a "salt bath" or use pond salt in the pond while using Dimilin?
Yes, but be careful. Salt baths for fish with anchor worms should be in a tub that is not used for other fish. When using the same tub for a salt bath for more than one fish, be sure to clean it completely, as anchor worms spread very easily.
Will EcoRx - Anchor Control change the color of my pond water?
No. You can use EcoRx - Anchor Control without change to your water color or clarity.
Can EcoRx - Anchor Control be used with tropical fish?
Yes. Dimilin is formulated for use with ornamental fish, including koi, goldfish, comets, shubunkins, fantails, carp, fresh and saltwater tropical ornamental fish, coldwater aquarium fish, shiners, and minnows.
What are anchor worms and how do I know if I have them?
The most common symptom is the female worm embedded in the side of the fish. The anchor worm appears as a gray or black strand up to one inch (2.5 cm) in length. Algae can collect on the worm, giving it a green appearance and the point of entry may develop a red ulcer, due to secondary bacterial infections. You may also see two egg sacs hanging from the worm.
Eggs are released into the water, where they hatch into microscopic free-swimming copepods. The copepods feed on the fish mucus, but do not damage the fish. After mating, the female parasite then penetrates into the fish and anchors itself under the skin. The anchor can go so deep as to penetrate organs in smaller fish.
The female worms then develop two large egg sacs that can contain up to 700 eggs. Once the eggs hatch, the free-swimming parasites re-infest the fish. The parasite's life cycle is temperature dependent and can take as little as 15 days when the water is 86°F (30°C). Anchor worm infestations are most common on koi and goldfish.
How long will the anchor worms remain on the fish?
The female anchor worm will remain on the fish even though it is dead. The worm will disintegrate and fall off of the fish in time. There is no need to pull the worms off of the fish. This tends to rip the "anchor" out of the flesh and increase the chances of secondary infections.
To view a printable .pdf copy of the MSDS (Material Safety Data Sheet) that has been filed with the EPA, click on the link at the end of this statement. To return to this screen, click on your browser's BACK arrow (located in the upper left corner of your screen). "DOWNLOAD MSDS"
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