YWG - Day 6 and still kicking

No, the ones I keep referring to as the "last batch" did not survive metamorphosis; the last stragglers died at Day 30.

There have been other batches, but none of those batches survived past 5 days, for one reason or another.
 
He has a yellow/golden hue about him too. Has that always been there as intensely as it seems to be in the last pic?
 
I am not sure if that is an artifact of the photo setup I use or not. There is not yellow visible to the naked eye, but to the naked eye they mostly look like glass slivers with 3 tiny black dots :)

You can see THROUGH them, so how much color can they actually have? They may have some tint that is getting picked up and amplified, but I think it looks brighter than it really could be. The yellow tint shows up in all the pictures that I do that are top-down with side lighting (except for the very first few days) mostly around the eyes and belly.
 
60-70? That's a rough guess. You can can go blind looking for these guys in the larval tank. They are about 3.5mm long and .75-1.00mm wide at the head.
 
Yesterday, I counted 85 once and 95 the next time. Wow, I thought. I carefully siphoned the bottom of the tank and examined all the detritus. It was somewhat of a shock to realize the *thousands* of black dots on the bottom of the tank are all that's left of so many babies -- their black eyes.

Well, despite a healthy culture of rotifers and stable pH and no ammonia, it think I lost at least half of my babies today. Quite a few are merely drifting through the water and overall they are very quiet and lethargic. It doesn't look good. I performed a water change and thinned the rotifers. We'll see what the morning holds.
 
I forgot pics:
Day 13. You can clearly see a tail fin. They are getting black dots near the end of their tail, too -- a strip forming?
day13top.jpg

day13side.jpg
 
P.S. Interesting -- I have most babies settled in to sleep on the bottom when lights went out. (And they look fine and not sick or anything. I hope) My last batch never did really decide to actually settle.
 
Well, I am losing my gobies, and I don't know why. :( Since I posted two days ago, my population has been steadily declining. It's now Day 15, and I have maybe 15-20 gobies left. Many are lethargic and very thin, but there is plenty of food. So I don't know if they are dying because they stopped eating, or they stopped eating because of some other factor.
 
I have a probe in the tank, so I see the pH all the time. pH is pretty steady at 7.8-7.9. Granted I don't know what the pH SHOULD be for YWG larvae, but that seems like a pretty safe range?

One of the bigger, more developed one has his pelvic fins now, and more black spots along the tail, some different sizes (like the ones you see in the day 13 side view above.) Everyone should have their pectoral fins now.

I have not seen any settling except for the one night that I mentioned above, but it's a bit early for that.
 
Why do you say that is a pretty safe range though the larvae still die. It's low for adult fish...why would it not be low for larvae as well.

I don't want to come off sounding critical. Lord knows, you're doing all the work. If anything I am living vicariously through your experiences, and I just want to see continued success.
 
It's not a low pH for clownfish larvae. I don't know if the same applies to this species though. It might be too low -- or too high! Or maybe it's perfect and there's some other problem.

*sigh*

Pama clown better watch out... I've got my eye on HIS nest now.
 
How very interesting. Thank you for sharing your pioneering with us. Hopefully things will turn around for the better.

I wish my clowns would hurry up and get through the pairing process so I can try my hand at this.
 
They are not big enough yet for artemia probably. The last group wouldn't take it at 16 days. And it's a royal pain to have a tank full of sea monkeys when you are looking for 1/4" long clear larvae!
 
LOL - I can only imagine :D Sorry to har about the losses, but you still have a good chance with the rest. I love reading about people experimenting with species not commonly raised in homes. Keep it up, I'll likely try some Royal Gramma fry as soon as the parents give me the opportunity.
 
Well, I think I know what went wrong. I was getting so obsessed about pH I was using a lot of buffer. I do recall thinking a couple of times, "gee, I wonder if this much buffer is harmful."

I tested everything I could think of today. Alk was off the charts :( Dumb move.

Last time I didn't even check pH once and the got to 30 days. I suppose low pH isn't nearly as bad as high Alk.

I corrected the situation with a large water change (new water has been dripping in for a couple of hours), so we'll see if the last handleful -- 7, I think -- make it.
 
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