Flukes

Humblefish

Dr. Fish
View Badges
Joined
Nov 9, 2014
Messages
22,424
Reaction score
34,852
Rating - 0%
0   0   0
Flukes:

Symptoms - Flukes are parasitic flatworms which harbor mainly inside the gills. Physical evidence of flukes is usually not visible; however at least one genus likes to target the face & eyes, so you may notice visible symptoms in those areas. Behavioral symptoms such as yawning, head twitching, scratching (targeting the gill area) and lethargy are much more common. As the disease progresses, the worms move to the eyes, and this is when you may see visible symptoms (cloudy eyes). However, you can confirm the presence of flukes at any time by performing a freshwater dip. At around the 3-4 minute mark, you will see tiny white worms fall out of a fish (especially out of the gills) if a fish has flukes. The worms will settle to the bottom, so you can use a flashlight to look for them there as well. A dark/black bucket is preferred for the freshwater dip, as that makes the white flukes easier to see.

Treatment options - Prazipro. Performing a freshwater dip will provide temporary relief, but two rounds of Prazipro (5-7 days apart) is usually required to eradicate flukes. Formalin may be used as an alternative treatment.


Prazipro (praziquantel): Treats flukes, black ich, and some internal parasites (worms).

How To Treat - In either a quarantine or display tank, dose Prazipro at the rate of 1 teaspoon per 20 gallons of water. DO NOT OVERDOSE (especially with wrasses), try not to mix with other medications (for various reasons), and provide additional gas exchange while treating with Prazi. Wait 5-7 days, do a 20-25% water change and then repeat dosage. The reason for the second dose is to eradicate the “next generation” of worms before they can lay eggs of their own. Because while Prazi does kill worms, it doesn’t eliminate any eggs they might leave behind.

Prazipro is generally considered reef safe, although it may kill any tube worms/feathers dusters you have. It may also eradicate bristle worms. If you have mass quantities of these, the resulting die-off can lead to an ammonia spike. After treatment is done, activated carbon may be used to remove any residuals (if you need to use a different medication next). If using a protein skimmer post-treatment, be advised that it will “over skim” for at least a couple of weeks.

Pros - Reef safe, effective dewormer that is relatively gentle on most fish.

Cons/Side Effects - Mild appetite suppression, moderate oxygen depletion, wrasses are sensitive to overdosing.
 
OP
OP
H

Humblefish

Dr. Fish
View Badges
Joined
Nov 9, 2014
Messages
22,424
Reaction score
34,852
Rating - 0%
0   0   0
A freshwater dip can be used to confirm the presence of flukes in your fish (more info below.) Also, if you suspect your fish is heavily infested with flukes, a freshwater dip is highly recommended before treating with Prazipro.

Freshwater Dip: Provides temporary relief for Brooklynella, Flukes, Marine Velvet disease (Amyloodinium); possibly even Ich & Uronema marinum (both unproven). Can be used to confirm the presence of Flukes.

How To Treat - Fill a bucket with RODI water, and use a heater to match the temperature to the water the fish is coming from. Aerate the water heavily for at least 30 minutes prior to doing the dip, then discontinue aeration while performing the dip. Fish aren’t overly pH sensitive for short durations like this, but you can squirt a little tank water into the dip just before the fish goes in to help bring it up.

Place the fish in the freshwater (FW) dip and observe closely. It is not unusual for them to freak out a little at first. Also, tangs are notorious for “playing dead” during a FW dip. The important thing is to watch their gills; they should be breathing heavily at all times during the dip. If breathing slows, it’s time to exit the dip. Dip the fish for no longer than 5 minutes. Multiple dips may be done, but it’s important to give your fish a day to recuperate in-between dips.

For flukes, use a dark (preferably black) bucket so you can see if tiny white worms fall out of the fish (especially out of the gills) at around the 3-4 minute mark. The worms will settle to the bottom, so you can use a flashlight to look for them there as well.

Pros - Provides temporary relief for a wide range of diseases in a chemical free environment. Can “buy you more time” until a proper treatment can be done.

Cons/Side Effects - Not a permanent “fix” for any disease, as FW dips are not potent enough to eradicate all of the parasites/worms afflicting the fish. Some fish can have an adverse reaction to a FW dip by appearing unable to maintain their equilibrium once returned to the aquarium. If this happens, hold the fish upright (using latex, nitrile or rubber gloves), and gently glide him through the water (to get saltwater flowing through the gills again). It is also a good idea to place the fish in an acclimation box until he appears “normal”.
 
OP
OP
H

Humblefish

Dr. Fish
View Badges
Joined
Nov 9, 2014
Messages
22,424
Reaction score
34,852
Rating - 0%
0   0   0
Below are two videos showing what flukes look like once exposed to freshwater. In the first video, you will see a closeup of flukes on the bottom of a container after they have dropped off a fish following a freshwater dip. In the second video, you will see a wrasse being given a freshwater dip and flukes on his body.

All credit for these videos goes to Cody aka Arkaeus, a fellow Louisiana reefkeeper. :)



 
OP
OP
H

Humblefish

Dr. Fish
View Badges
Joined
Nov 9, 2014
Messages
22,424
Reaction score
34,852
Rating - 0%
0   0   0
Below is a pic to boot. This wrasse was most likely afflicted by Neobenedenia, a genus of flukes which is sometimes visible on the skin even in saltwater - I've heard it best described as looking like "little contact lenses all over the fish." Neobenedenia prefers the face, lips & eyes.

 

Managing real reef risks: Do you pay attention to the dangers in your tank?

  • I pay a lot of attention to reef risks.

    Votes: 141 43.3%
  • I pay a bit of attention to reef risks.

    Votes: 114 35.0%
  • I pay minimal attention to reef risks.

    Votes: 50 15.3%
  • I pay no attention to reef risks.

    Votes: 16 4.9%
  • Other.

    Votes: 5 1.5%
Back
Top