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Reefguide

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I started feeding the broadstock pair Selcon (Omega 3 HUFA) a few weeks ago. The last nest of eggs was huge. I attribute the larger nest to the selcon. Anyways, 2 days after the hatch again all the fry died. Actually these pictured were alive less than 24 hrs ago. I think it might have to do with the collection method I used this time around. I didnt place a ceramic tile this time for the nest and was forced to collect them from the main tank and siphoned most of them out and scooped a few also. I literally have one larva swimming around in the fry tank now. :? I am willing to accept the loss as a collection losses but the dead fry and not decomposing as usual. They dead fry are RED !! not cyano growing on them or anything like that. I looked at several under a loupe and it looks like the fry tissue is whats red. WHAT IN THE WORLD IS IT? Parasidic maybe? signs or low O2 maybe? Wather parameters are normal. I find nothing in Wilkersons or Hoffs (fl aqua farms) books about this... I'm stumped... They hatched with normal colorations BTW.

red_clowns.jpg
 

liquid

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Were they red before the died? Or did it go from what fry normally look like and they slowly changed to this color?

Shane
 

Reefguide

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They hatched with normal coloration and died with normal coloration. Normally when they die they just turn to an opaque white, these once they died they changed to red in just a few hours. They seemed to turn bright red and then tone down to a lighter red after a few hours... If it were cyano or something it would be just the opposite I would think, turning from light red to drak red with time, not the opposite..

Thanks...
 

liquid

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I assume that nitrates, nitrite, ammonia were all below detection limits? Did you have enough air going into the holding tank?

FWIW, I'd agree that more than likely the majority of them died because of your collection method. Siphoning things that delicate can have disastrous effects.

Shane
 

wade1

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I'm guessing that due to the color change being post-mortem it was a fungus. Not uncommon for the like to happen.

I also had a similar experience recently. I had a very small hatch (only maybe 5% or so after moving the tile. I then thought I'd put the fry into a smaller tank, so I siphoned them off into a container. Within 3 hours, all the fry in the container were dead. I think the shock is too much for them, although Wilkerson says its positible to move them that way. From now on, I'll use a cup and scoop them out.

Good luck on the next batch!

Wade
 

Reefguide

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Yeah I figured that the collection method might be the prob. Do you guys think the fungus caused their death or just hapeneded after the fact..? I have heard of dipping the eggs in solutions like iodine when moving the nest to a hatch/larval tank. You guys ever use such solutions?
 

goofyreefer

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You may want to contact Joe Lichtenbert who's mentioned in Joyce Wilkersons book. I only met him once about a year ago when i bought a pair of clowns from him but he is a really nice guy who may be able to help out. If you want his email address PM me. I don't want to post it here without him knowing.
 

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