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Re: Angelfish fry died
I've recently had a similar experience. I pulled a leaf of 40 - 50 angelfish wrigglers on 10/29 and put it in a 2.5 gal tank with air stone. Once free swimming, I added a DIY sponge filter using a small sponge from an established filter and an air stone. Over the course of the last few weeks I have lost all but 8 of these although all were free swimming at one time. They do hang on the bottom of the tank at first, but that is OK. I've been feeding frozen baby brine shrimp and occasionally Hikari First Bites.
Since the sponge I used was from a well established tank, I had not done any water testing until recently. I had also been advised that water changes would unduly stress the fry. However, I found that I had extremely high nitrites (2.0), although no ammonia, and nitrates < 5. So for the last two weeks, I have changed 50% of the water twice a day. No losses since then, but I don't think I'm completely out of the woods yet. Of the eight I still have, they are all sizes. The largest two or three, who now have the angelfish shape, are about 3-4 times the size of the smallest two, who still look like they just fell off the leaf. And the others are somewhere in between.
I'm just starting to cycle a 5 gallon and will move the largest 3 into there if they make it another few weeks. And I have one more 5 gal to cycle for the others and I know I really need a bigger tank if they are to grow properly.
While going through all of this, of course the parent spawned again, but these eggs were gone overnight. I'm not really ready to try to save any others just yet. I'll see how far I get with these 8.