Tadpoles ID please - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 03-12-2015, 08:45 PM Thread Starter
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Tadpoles ID please

My first tank/Paludarium in life is almost complete, link to build Journal here..

As all the plants are still missing, I went on a little walk outside, and check the local streams and ponds. I've managed to get quiet a few different ferns and mosses that have grown near the water, and also two different submersed plants.

But the most important thing is, I've also found some frog spawn.

So I've quickly set up another two small 0,5 gallon vase/tanks, with DIY air filter. They will serve as plants quarantine tanks, and also as breeding tanks for few days at least.

As the temperature inside is mush higher than outside in stream, where the frog spawn was found, tadpoles have emerged in one day.

Can someone ID them in this stage? I am from Slovenia, Ljubljana, so you can narrow the search, and they were found in marsh/flooded woods type of habitat.

Thank you in advance!
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post #2 of 10 (permalink) Old 03-12-2015, 08:56 PM
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I'm going to guess that these are the tadpoles of a salamander or newt, and not a frog or toad.
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post #3 of 10 (permalink) Old 03-12-2015, 09:08 PM
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Too Cool!
Possibly axolotls?
Going by the gills they look close but I find no reference to them anywhere but Mexico?

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post #4 of 10 (permalink) Old 03-12-2015, 09:19 PM Thread Starter
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Quote:
Originally Posted by NotCousteau View Post
I'm going to guess that these are the tadpoles of a salamander or newt, and not a frog or toad.
That was my first guess also, but than I've checked, and salamander and newts lay they spawn/eggs one by one and not in large clumps, as this were.

My current guess is Rana temporaria, but I am not 100% yet..

These are other frogs native to my country..


There is a little chance, that tadpoles are also from this frog, as the time is right, but they are really rare sadly..

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post #5 of 10 (permalink) Old 03-12-2015, 09:40 PM
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Possibly Olm?
http://en.wikipedia.org/wiki/Olm
They could be in your area.

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post #6 of 10 (permalink) Old 03-13-2015, 12:10 AM Thread Starter
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I still think they are some kind of frogs, as spawn was in large clusters glued together..

And frog tadpoles also have gills in first few weeks.. link

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post #7 of 10 (permalink) Old 03-13-2015, 12:53 AM
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Quote:
Originally Posted by Coralbandit View Post
Too Cool!
Possibly axolotls?
Going by the gills they look close but I find no reference to them anywhere but Mexico?
No, not axolotls. Axolotls (Amblystoma mexicanum) are only found in a couple of bodies of water in Mexico and are actually believed to be extinct in the wild now. This is definitely not a species you would find breeding in Europe. They are not Proteus anguinus either as these have melanin, something that most olms lack. Olms are strickly a cave species and lack pigment in their skin giving them a distinctive pink color. I guess Proteus anguinus parkelj could be a possiblility, but it would be a very rare find because of it's cryptic nature (lives in underground waterways). All salamanders with a larval stage will have pronounced gills at this point, frogs typically not so much, so I highly doubt that this is Rana temporaria. By the way, that last picture is altered. It isn't really blue if that is what you were hoping for

My money is on either the smooth newt (Lissotriton vulgaris) or the Italian crested newt (Triturus carnifex). Do you know if either of these species are native to you're area? Besides gill structure, the elongated body is definitely causing me to believe these are salamander spawn.

John
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post #8 of 10 (permalink) Old 03-13-2015, 01:47 AM Thread Starter
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Originally Posted by FroggyKnight View Post
It isn't really blue if that is what you were hoping for

My money is on either the smooth newt (Lissotriton vulgaris) or the Italian crested newt (Triturus carnifex). Do you know if either of these species are native to you're area? Besides gill structure, the elongated body is definitely causing me to believe these are salamander spawn.

John
The blue frog is Rana arvalis, which is also native to Slovenia, but very rare, and turns blue only when breeding.

Maybe you are right about salamanders, as they are both native to my country, and I have seen them both in nature, but..

- they don't lay their spawn/eggs in group, but one by one under leafs etc.. this ones were in large clump/group
- tadpoles are 5 mm large at the moment, salamanders should be much bigger

I'll go and take some photos of spawn in its natural habitat tomorrow, as I am already going to pick some more plants for my tank, and maybe we can guess more accurate?

edit: added a small time-lapse from today
https://www.youtube.com/watch?v=Nm4UU-r5KRU

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Last edited by DIY Medicine Man; 03-13-2015 at 02:05 AM. Reason: added a small time-lapse from today
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post #9 of 10 (permalink) Old 03-15-2015, 10:21 AM Thread Starter
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Tadpoles are evolving really quickly.. Now I am almost 100% sure that they are frog tadpoles, and that they are from Rana temporaria speices.. but I can be wrong.

Here is a video from yesterday. You'll see that gills are almost gone, and that they do look more like frogs now. If you look closely, you can even see tiny legs emerging..

https://www.youtube.com/watch?v=mNgoZ9PFSOY

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Boroot

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post #10 of 10 (permalink) Old 03-16-2015, 11:30 PM Thread Starter
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Little update

Tadpoles are growing like crazy.. Now I am sure that they are frog tadpoles. They've ate all the spawn so I've thrown them some spirulina pills, and it seems that they like it.
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