Marine Anchor Worms

Marine anchor worms, or Lernaeocera branchialis, are a type of crustacean that is commonly found in saltwater aquariums. They range from one to five millimeters long and resemble an anchor. The marine anchor worm has two antennae on its head which it uses to swim through the water and locate food.

Anchor worms are a danger to aquariums because they often attach themselves to fish and feed on their blood. This can lead to irritation, inflammation, skin lesions, and even death if not treated in time. They also spread diseases which can be fatal for other aquatic life. To prevent marine anchor worm infestations, it’s important to regularly check the water and fish for any signs of infection or parasites.

The best way to remove marine anchor worms is by using a net to scoop them out of the tank. This should be done as soon as they are spotted, as they can quickly spread and cause a lot of damage. It’s also important to keep the water clean and free of any debris or food which could attract the worms.

Symptoms of Marine Anchor Worms

Marine anchor worms are visible to the naked eye, and they attach themselves to fish or other aquatic life. They cause irritation and inflammation where they have attached, and this can be seen in the form of redness or raised bumps on their skin. In some cases, the skin could start to rot if left untreated for a long time. Symptoms of infection include:

  • Lethargy
  • Appetite loss 
  • Rapid breathing

In severe cases, the fish will have difficulty swimming or even die from the infection.

Diagnosing Marine Anchor Worms

The best way to diagnose marine anchor worms is by looking closely at the fish or other aquatic life. If any raised bumps, redness, or skin lesions are visible, the fish could be infected with marine anchor worms. It’s also important to check the water for any debris or food that could be attracting them.

Stages of Marine Anchor Worms

Marine anchor worms go through four stages in their lifecycle.

The mollie is in no hurry to go anywhere

Stage 1

The first stage is eggs that hatch into larvae.

Stage 2

The larvae then attach themselves to fish or other aquatic life and start feeding on their blood.

Stage 3

After a few weeks, the larvae molt into nymphs and begin to look more like adults.

Stage 4

The adults then reproduce and lay eggs, restarting the life cycle.

Treating Marine Anchor Worms

The most effective way to treat marine anchor worms is by using an antifungal medication. This should be done as soon as the problem is noticed. The worms can quickly spread and cause severe damage, so it’s important to treat them right away. In addition to this, it’s important to keep the water clean and free of debris or food which could attract them.

Preventing Marine Anchor Worms

The best way to prevent marine anchor worms is by regularly checking the water and fish for any signs of infection or parasites. If any are noticed, they should be removed as soon as possible. It’s also important to keep the water clean and free of debris or food which could attract them. It can also help by reducing any  overcrowding in aquariums, because this can make it easier for the worms to spread.