eggs and hatchling questions

axolotl nerd

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hi everyone, i have a few questions.

one - i don’t have any daphnia/BBS in my area, and i’m hesitant to buy online because i‘ve seen very mixed reviews. i’m only keeping 25 eggs and culling the others, and i was wondering if i were to manually take each hatchling (not like pick them up, just have them separated) and wave bloodworms near their face if they would accept it?

two - if the mother is gfp and the father is not, what are the odds i have gfp hatchlings? also, can you tell if an axie is gfp by shining a black light on the eggs?

three - do newborns//hatchlings need a filter? i know you have to change the water daily (or more than once a day, depending on feeding schedules and how messy they are) but i haven’t been able to find anything on filtration. i’d use a sponge filter, but i’m still concerned.

that’s about it, if i remember anything i’ll be sure to post it here! thanks everyone :)
 

JM29

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Hi !

I'll try to give some answers, but sorry, not all :

One - axolotls hatchlings generally accept only small living (moving) preys.
I agree that buying daphnia online seems risky. You could try to find brine shrimp eggs (you can obtain BBS hatching within 2 days).

Two - sorry, I know nothing about the GFP gene and how to diagnose it, but I'm sure someone on the forum has much more knowledge than me.

Three - I've never used a filter with the newborns/hatchlings (18 years without problems). Changing the water often is enough.
With only 25 newborns, you can keep them in something like a tub, with only one inch deep water, so that the ratio surface/volume is high (better oxygen supply)

Other advices and experiences will be interesting
 

axolotl nerd

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thanks so much! also, i’m planning on keeping them in these as they grow and get bigger :)
just drilled holes in the lids too
image.jpg
 

Dr. Phil

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Wow - I didn't know there were GFP axolotls. I know a little about genetics and GFP and just looked into it. I found this excellent site on inheritance of color in axolotls, with mention of GFP...but not much more, other than that it 'is inherited': gfp trait – Water Critters
I would guess that the GFP gene acts dominantly - meaning you only need one copy. If that is true, then there would be a 50:50 chance that the progeny would get it. You would likely be able to detect green fluorescence in developing larvae at later stages by use of a blacklight (long wavelength UV).

I had a good experience purchasing Daphnia online (from a company in the US). I have managed to keep the culture going. It's worth a try.

Good luck!
 

axolotl nerd

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Wow - I didn't know there were GFP axolotls. I know a little about genetics and GFP and just looked into it. I found this excellent site on inheritance of color in axolotls, with mention of GFP...but not much more, other than that it 'is inherited': gfp trait – Water Critters
I would guess that the GFP gene acts dominantly - meaning you only need one copy. If that is true, then there would be a 50:50 chance that the progeny would get it. You would likely be able to detect green fluorescence in developing larvae at later stages by use of a blacklight (long wavelength UV).

I had a good experience purchasing Daphnia online (from a company in the US). I have managed to keep the culture going. It's worth a try.

Good luck!
thank you! ill cert try this!
 
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    Hey guys, one of my axolotls has developed some fungus on one of her gills, I've started salt baths, but do salt baths need to be done in the fridge, some people said I should have her in the fridge permanently during the process, even when not in the salt bath, is this true? As some people said its unnecessary as long as the tank is below 20°c which it is. Also do I need to get them both out the tank and clean it out?
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    Hi Lilith, you can check the medications page for a list of axolotl safe treatments. Although if the infection is mild, I would stick with fridge and salt baths!
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    I believe the fridge gets to about 54°, so if you can replicate that in the tank, it might be okay. I personally would fridge just to make catching them easier, and if the infection is something in the water column at all, it will hopefully die out while they're AWOL (I'm thinking like ich for fish, not sure if axies have an equivalent)
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    Ok, thank you!
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    My three inch axolotl was having trouble pooping up to a few days ago. I wasn't feeding her as often because I was scared I would just add to her constipation. I fridged her until she pooped (twice), and then began to feed her around 6 bloodworms every other day. she's been pooping everyday now, but she's at that age where you can see through her stomach and I always see poop ready to come out but has not yet passed. I don't think she's constipated anymore, but I'm not sure and i don't want to over or underfeed her... any advice?
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    Feed it chopped worms chitoos, its big enough and bloodworm is nutritionaly deficient.
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    Freeze dried , live or frozen bloodworm.
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    Oh ok thanks! I thought she might be ready for something more. do you have any advice about the apparent poop problem?
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    @Lilith, fridging is not required for fungus treatment. Read my thread on treatment.
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    Feed it more, six bloodworm isnt much, dont use freeze dried foods
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    Feed daily , remove uneaten food
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    Gotcha, Thank you!
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    Its probably not pooping because its hardly beign fed, it pooped in the fridge because the lower temp caused it to purge itself. If it stays constipated you can pm me
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