Are they sick or is it a fatal deformity? About 30% seem to be afflicted and from past experience they will fade and die in a couple of weeks. From 500+ eggs I have approx 80 month-old babies. The affected ones still eat and seem normal except they lack balance and boyancy and struggle to stay off the bottom. They are growing normally but will soon slow down. Is this natural or a bacterial thing? The rest seem fine. Water quality is excellent and I use a UV sterilizer. Diet right now is live brine shrimp several times a day and care is taken to keep food clean, no shells or unhatched eggs. Seems to happen every batch to some extent. Any thought would be appreciated. By the way I have mastered raising from eggs to day 7 at about 95% but only about a 20% conversion to brine shrimp from day 7 to 12. Mortality drops to almost zero until this suspected swim bladder issue shows up at about day 21. Help, Thanks, Peter.
2006-11-27 09:12:29 · 5 answers · asked by Peter V 1 in Pets ➔ Fish
Probably a congenital deformity passed via genes. If it happens with only one pair, I would try to split the pair and change their partners so you can see if it one or the other that is carrying the faulty gene.
You are probably better culling the young that have the swim bladder fault and not letting them breed as they may pass on the fault.
Good luck with future breeding.
I had the same problem back in the eighties and found it was down to one male fish.
I don't breed anymore but have a pet store
2006-11-27 09:21:43 · answer #1 · answered by stevehart53 6 · 0⤊ 0⤋
With angels, you should have a bare bottomed tank (no gravel or sand) so you can siphon debris and uneaten food daily without any problems.
The biggest killer of angel fry is the bacteria that grow in the fish waste and uneaten food that collects at the bottom of the tank. If you siphon daily and replace 30% of the water every day, I predict you will have close to 80-90% grow out of your fry. That would be 400+ from a 500 egg spawn.
Another reason very small fry do not live well is that they need to be fed 3-4 times a day at regular intervals of about 3-4 hours. Lack of regular protein will keep them from developing their internal organs properly.
I assume you know to use methylene blue to guard against fungus attacking the eggs while they are being incubated.
I am not an expert on UV, but it might be killing off some of the microscopic live food that the babies eat when they first start out after absorbing their egg sac.
2006-11-27 12:50:22 · answer #2 · answered by 8 In the corner 6 · 0⤊ 0⤋
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2016-10-13 05:43:09 · answer #3 · answered by ? 4 · 0⤊ 0⤋
The experiance I've had with baby fish is theres usually alot of them to begain with but only a select few end up surviving. I think that they just have a high rate of deformities.
2006-11-27 09:15:00 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i have had this happen to platy babies. Most babies just dont live because they are not strong enough. Theres really nothing you can do unless you wanna make a formula, put it in a bottle, and feed each individual one. haha
2006-11-27 12:21:08 · answer #5 · answered by SED757 2 · 0⤊ 1⤋