Can Blue Gudgeon Dartfish tolerate hyposalinity?

Alive55

New member
I see it mentioned many times "certain fish" don't tolerate hyposalinity very well. Can Blue Gudgeon Dartfish and Blue Damsels tolerate hyposalinity? I am not too worried about the damsel. They appear to be very hardy fish. But the Dartfish has extremely fine scales, if it scales, and looks more fragile.

They are only survivors of 15 fish that were quickly wiped out from what I believe to be velvet based on a "powdered sugar" appearance on my Valentini puffer's head. Thankfully the survivors are eating very well and look healthy which of course is no guarantee they are healthy. I received my Ick Shield, a.k.a. chloroquine phosphate, have a 10-gallon QT and plan on doing CP with hyposalinity for at least 21 days<sup>*</sup>. I plan on sterilizing, redesigning, and cycle the DT while they are in the QT.

<sup>*</sup>The above CP with hyposalinity treatment is from The Marine Fish Health & Feeding Handbook by Bob Goemans and Lance Ichinotsubo. Every day I see postings of panicking people due to many fish dying very fast. That is exactly what my posting was like. The Handbook cost me less than $1 and $4 shipping on Amazon.

In the motorcycle world, we have a saying, "œThose that have and those that will." It refers to riders going down on the bikes. This saying also fits this hobby. Those that have had diseases and those what will have diseases. Get the book and prepare before you get hit. I wish I had. :headwally::sad1:
 
I would just treat with CP at normal salinity. I know Bob Goemans is a big advocate of combining hyposalinity with meds, but I haven't seen anything in the literature that states it is more effective.

I've treated dartfish (Nemateleotris sp.) with CP and they do fine.
 
I would just treat with CP at normal salinity. I know Bob Goemans is a big advocate of combining hyposalinity with meds, but I haven't seen anything in the literature that states it is more effective.

I've treated dartfish (Nemateleotris sp.) with CP and they do fine.

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[FONT=&quot]What are your thoughts on reducing salinity to somewhere between 1.0175 and 1.020 in the QT to allow the fish to use less energy to remove salt from there bodies and hopefully reduce stress in the QT? Lower salt also mean more oxygen in the water. Again, the credit goes to the Handbook for this idea.[/FONT]

[FONT=&quot]To be clear, I understand that salinity between 1.0175 and 1.020 is NOT "œhyposalinity" and will NOT produce the affect on pathogens that hyposalinity does.[/FONT]

[FONT=&quot]And thank you for the response.
[/FONT]
 

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What are your thoughts on reducing salinity to somewhere between 1.0175 and 1.020 in the QT to allow the fish to use less energy to remove salt from there bodies and hopefully reduce stress in the QT? Lower salt also mean more oxygen in the water. Again, the credit goes to the Handbook for this idea.

No harm in doing that. Just remember to raise salinity slowly before you transition the fish to the DT. My rule of thumb is .001 SG per day.
 
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