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FishDeals.com | Aquarium Fish Disease Identification, Diagnosis & Treatment
 
Oodinium (Velvet) - Identification & Treatment

Major Sick Fish Diseases:

Much has been written on the topic of stress & disease, below is summary to help guide you throughout Oodinium (Velvet) prevention and identification. Please feel free to send any comments or suggestions to Ask An Expert.

 Ask a Question in the Sick Fish Stress & Disease Forum

Name: OODINIUM (VELVET)
Symptoms:
  • Fine grey-gold to whitish 'dust' on the body
  • Very rapid gill movement
  • Scratching or flashing
  • Clamping of the fins
  • Very similar it ICH

  • Symptoms of Stress & Disease
  • Oodinium (Velvet) General Description
    The disease is caused by a protozoan parasite (Gold or rust disease), and may be triggered by exposure to ammonia and nitrite, or excessive nitrate levels.

    This parasite is a microscopic dinoflagellate (two little "whip like organs" or flagella used to propel the parasite through the water). It attaches to the skin (then loses the flagella) of fish in order to feed. Initially it appears as small white dots (similar to ich) but is much finer giving it a "velvet" appearance. They can live without a fish host for up to 24 hours in the water.
    Oodinium (Velvet) Treatments
    Possible to cure by not probable. Fish most often die. There are effective commercially available remedies, including Waterlife Protozin (UK and elsewhere), and Maracide by Mardel Labs (US and elsewhere). Begin treatment as soon as possible.

    As Velvet is highly contagious it is important to eradicate this problem as soon as possible. Treatment is aimed at the free swimming stage and there are good cures available from your local freshwater aquarium fish store. Copper sulphate can be used at a concentration of 0.2 mg per litre or 0.2 ppm. This should be repeated after 3 days to ensure eradication.
    Oodinium (Velvet) Prevention
    Velvet is the most common disease among Bettas. It is caused by an algae that feeds on the slime coat of the betta, as well as other bodily fluids. It attacks the gills first, then spreads over the rest of the body. Because of this, early detection is a must.
    Image Gallery of Oodinium (Velvet)
    (Click to view full resolution)

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    Oodinium (Velvet) Frequently Asked Questions

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    #ImageDisease TitleTop 3 Symptoms
    1. Ammonia Poisoning
  • Red streaking on the fins or body.
  • Purple or red gills.
  • Fins are torn & jagged.
  • 2. Anchor Worms
  • Tiny white-green or red worms in wounds.
  • Frequent rubbing or "flashing".
  • Ulcers may appear.
  • 3. Black Spot
  • Small black speckles on body.
  • Frequent rubbing or "flashing".
  • Small black smudges on fish.
  • 4. Cataracts
  • White or grey "foggy" eyes.
  • Eye looks like it has a slime coat.
  • Tendency to bump into things.
  • 5. Cotton Mouth
  • White "Cotton like" fungus on the mouth.
  • Lethargy and loss of appetite.
  • White spots on mouth, scales, and fins.
  • 6. Curved Spine (Fish TB)
  • Curved or Crooked Spine.
  • Lesions on the body.
  • loss of scales.
  • 7. Dropsy
  • Huge, Fat, Bloated Belly.
  • Lethargy and loss of appetite.
  • Scales almost popping off.
  • 8. Fin Rot
  • Fins turn Jagged or whitish and die back.
  • Fins look like they were ripped off.
  • Fish is not eating.
  • 9. Hole in the Head
  • Hole in the head.
  • Small sore on head.
  • Lethargy and loss of appetite.
  • 10. Ichthyophthirius
    (white spot or ick)
  • Small white "salt-like" pimples on fins & body.
  • Lethargy and loss of appetite.
  • Frequent rubbing or "flashing".
  • 11. Neon Tetra Disease
  • Restlessness.
  • Whitened areas deep into the fishes' flesh.
  • Spine may become curved.
  • 12. New Tank Syndrome
  • Sudden Death.
  • Cloudy Water.
  • Unexplained Death.
  • 13. Oodinium (velvet)
  • Fine grey-gold to whitish 'dust' on the body.
  • Very rapid gill movement.
  • Scratching or flashing.
  • 14. Parasites (External)
  • Large ugly sores on body.
  • Skin looks grey in patches.
  • Fish swim aimlessly.
  • 15. Planaria
    (white hairlike worms)
  • Small White Hairlike Worms.
  • Tiny, Wiggley Worms often found in the substrate.
  • 16. Pop Eye
  • One or both eyes protrude from the head in an unusual fashion.
  • 17. Skin / Gill Flukes
  • Fish gasps for air at the water's surface
  • Gills open and close rapidly
  • Gills are covered in mucus
  • 18. Swim Bladder Disease
  • Erratic Swimming Position
  • Loss of equilibrium
  • Fish will be unable to maintain buoyancy
  • 19. Vitamin Deficiencies
  • Scoliosis (Curved Spine)
  • Reduced Growth
  • Anorexia (Lack or Loss of Appetite)
  • View Symptoms per Vitamin
  • References/Further Reading

    The Manual of Fish Health
    Dr. Chris Andrews, Adrian Exell and Dr. Neville Carrington.
    New Jersey: Tetra Press, 1988

    Handbook of Fish Diseases
    Dieter Untergasser
    Translation by Howard H. Hirschhorn
    T.F.H. Publications, Inc., 1989


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