You have internal parasites sorry.
I am not the writer of this information below.
Intestinal Worms
Symptoms:
Symptoms are typically absent unless the disease is severe or advanced. Characteristic symptoms include visible worms protruding from the anal pore and an emaciated fish that appears thin or grossly distended.
Cause:
Various helminthes such as cestodes (tapeworms), nematodes (roundworms) and acanthocephalans (spine-headed worms). Digenetic flukes may also be responsible, but are rarely pathogenic in fish.
Treatment:
Treatment is usually unnecessary, as most infestations pass undetected and the parasite is usually unable to complete its life cycle due to the absence of the required host (e.g., fish-eating birds). Camallanus nematodes are an exception as they can multiply within the confines of the aquarium. In this case, treatment with an antihelmintic medication is desirable (see Camallanus for more).
Not the writer of this information either.
Camallanus
Symptoms:
When the fish is stationary, deep red worms can be seen protruding from the anal pore. They are only visible when the fish is still because the worms retreat into the intestine at the fish’s slightest movement. Other signs may include an inflamed and enlarged anus. In severe infestations, the fish may become emaciated and spinal curvature may also occur.
Cause:
The parasitic worms Camallanus Cotti and Camallanus lacustris. These small, livebearing parasitic worms attach to the intestinal walls and rectum with pinchers. The worm’s grip is so tight that any attempts to remove it forcibly will rip away tissue from the intestinal wall. The worm’s pinching causes ischemia (reduced blood flow) to that part of the intestine. In time, the tissue to that part of the intestine will die, at which time the worm will migrate to another part of the intestine. This causes perforations throughout the intestine, which allows other pathogens to gain entry. If the fish is not treated, either the parasite or bacterial will kill the fish. Camallanus infestations occur most often in livebearing fish such as Guppies and Mollies, though infection is possible in all fish. Camallanus infestations are contagious. All fish, including those not yet showing visible symptoms, as well as the aquarium, should be treated.
Treatment:
Treat with Internal Parasite Guard, Pipzine, Disco-Worm, Trichlorfon or Fluke-Tabs as well as a medicated food to prevent a bacterial infection.
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should i put them in there own tank?
