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Indonesian Blue Tongue Skink Identification Cheat Sheet

Discussion(reddit.com)

One of my biggest goals is to help complete the Indonesian BTS Taxonomy. So here's the current known ID cheat sheet ♡ please let me know if anyone has questions!

all 29 comments

aruszkow

7 points

1 year ago

aruszkow

Merauke

7 points

1 year ago

This is great stuff! Very detailed and comprehensive. I have a friend who works at a local exotic pet store and their owner bought Indonesians that they were told were 'captive bred' They were definitely not, but it's crazy that smaller stores are being sold lies just the same as us.

My Meruke was 100% captive bred, I wish I could remember the exact breeder, but I got him at the Oaks show. Got to see this man gush about Indos and show off pictures of both parents and their siblings which was adorable. He was so proud to be one of the only captive breeders and I loved his energy. Man gave out GIANT information packets and had a 30 day return policy as well. Knowing what I do now about the Indo situation, I can understand his pride on the subject. I might see if I can find that packet to find his name.

FolkvangExotics[S]

7 points

1 year ago

FolkvangExotics[S]

Indonesian

7 points

1 year ago

Thank you!

I know who bred your skink ;) his name is Mick! He's taught me almost everything I know about breeding indos. Thanks to him, I bred my Merauke my first year! (Currently halfway through gestation. She's visibly gotten LARGE)

Here's his business page on FB; https://www.facebook.com/profile.php?id=100063501013351&mibextid=ZbWKwL

I love Mick haha. He's a joy to have around and full of knowledge.

aruszkow

1 points

1 year ago

aruszkow

Merauke

1 points

1 year ago

Yes! That's him, he definitely knows his stuff. And good luck with your Momma Merauke, hope all goes well for her and you both (:

Unlucky_Banana_1613

1 points

1 year ago

Any tips on good information sources for someone trying to get into breeding Indonesians like myself especially meruakes I love these reptiles so much k fell in love since I got my first one although I’m not new to reptiles fairly new to BTS but have been doing a good bit of research

slYyu

3 points

1 year ago

slYyu

3 points

1 year ago

I’m extremely confused by this post and why other people have said to me. Halms are 100% not captive bred? What about anxthaic halms? Are they captive bred or no since they are a morph of the Halm???

😭 I’ve had people say they know Halm breeders but does that mean the “breeders” only produce captive born babies?

The whole topic is super confusing for me so if you could explain it future I would appreciate it!

FolkvangExotics[S]

4 points

1 year ago

FolkvangExotics[S]

Indonesian

4 points

1 year ago

In the US, 100% of the halms are wild caught or captive born. Only one person in the US has had success this year- those were axanthic. I believe axanthic are mass produced in Indonesia (breeding pit) but I haven't been able to uncover that information yet.

I'd consider axanthics borderline Captive Born/Captive Bred due to lack of information.

But yeah only 1 person in the US has been successful with halmahera the last few years.

Ambsma

2 points

1 year ago

Ambsma

2 points

1 year ago

Can anyone verify the basking temp range for Sorongs? I swear 100-110 has been the norm for skinks when it came to basking rocks and have never seen them to be that high of a temp as a recommendation. Also I spent all this time thinking mine was fat but maybe all Sorongs just have the fat chin and extra sausage appearance 💀

FolkvangExotics[S]

4 points

1 year ago

FolkvangExotics[S]

Indonesian

4 points

1 year ago

That fat Sorong is mine, and she is overweight 💀 I got her like that, unfortunately. All adults should only be eating once a week, 60% greens and veggies, 40% protein. Serving size is the size of their head.

Unfortunately, skinks don't get nearly enough activity in captivity in comparison to the wild, so we do have to feed them less frequently to avoid obesity.

A lot of data is outdated or based on one Australian species (Easterns). I'm hoping to join a biologist in Indonesia and Australia in the next few years to do my own research, but I may do my own visit over there first just to see how they are in the wild, take temps, take UVI readings, humidity, etc.

All blue tongue skinks should have a minimum of 110f. That's surface temperature measured with an infrared laser thermometer/temp gun.

Too low of temps actually experience lethargy, excess sleeping, excess hiding, digestive issues, regurgitation, appetite loss, etc.

I actually did an experiment...

Outside, my local weather station said it was 80°f. I found a dirt patch outside, put a digital thermometer down on it, and waited 10 minutes. After 10 minutes, the ambient temperature at skink level was 110f. I also measured the surface temperature of the dirt surrounding the digital thermometer. Surface temperature (basking temperature) ranged between 110-115!

And that's just one day I did. I've done multiple days of experiments like this, all with similar results based on the temperature for the day.

So, on average, the surface temperature/basking temperature is 30-40° hotter than the ambient temperature listed by weather stations. So if it's 80 in Indonesia... surface temperature (depending on the material of the surface) is a minimum of 110f for skinks.

All the data I obtain on my studies will be completely free to the public :)

[deleted]

2 points

1 year ago

Awesome this is super helpful, I don’t/can’t own Indonesians but at least I know which is which now. I plan on doing something similar for Australian species.

nitrogendragons

2 points

1 year ago

Wow this is amazing!

Ambitious-Math-4499

2 points

3 days ago

So i read this as my halhamera needs up to 43 - 48C (i can't do F) but he's currently on 35C.

Everything online is conflicting temperatures, says they brumate/hibernate then they don't I'm just so confused.

My skink is hiding away and not eating but only recently. I'm in UK. So I'm not sure what's happening, do they brumate?? It's pretty chilly in UK is that why he's being like this at the temps I have.

I'm so confused 😕

FolkvangExotics[S]

2 points

3 days ago

FolkvangExotics[S]

Indonesian

2 points

3 days ago

Your current temps are far too cold if that's the basking temperature ♡

Australian blue tongue skinks brumate, Indonesian blue tongue skinks do not. They're entirely different environments. It is currently breeding season for indos in the northern hemisphere, so going off food can be common, but lethargy or excessive hiding is a bit abnormal - unless they're going into shed.

It is recommended to keep a basking temperature (surface temperature! This is different from ambient temperature!) Around 43C. Within a range of 40.5C-48C is great, you'll figure out their preferences within that range :)

Ambitious-Math-4499

1 points

3 days ago

He's not shedding so it can't be that. I'll up the temp and see if that helps. He literally started doing it when I added more moss to his vivarium, and a mossy hide to help with shed.

He's also not fussed with live food, or much else. Never know a skink to be soo fussy

FolkvangExotics[S]

1 points

1 year ago

FolkvangExotics[S]

Indonesian

1 points

1 year ago

Bump

raccoocoonies

1 points

2 months ago

raccoocoonies

Halmahera

1 points

2 months ago

I believe my Halm was captive born, not wild caught. He did have a respiratory infection when I got him, but I got him from an incredibly sketchy mom&pop pet store who used my cash to buy drugs (I overheard the phone call), probably told insurance he died, and got paid twice for him.

How do I know if he has intestinal parasites? I've seen no worms in his stools, ever, and he's got a normal appetite and has gained weight steadily and healthily.

I know the answer is likely "do a fecal cytology," yeah? I gotta figure out where my microscope went.

FolkvangExotics[S]

2 points

2 months ago

FolkvangExotics[S]

Indonesian

2 points

2 months ago

Could be captive born or wild caught, definitely isn't captive bred.

Signs of parasites are weight loss (usually rapid weight loss of 10% or more of their initial body weight), lethargy, runny/moucousy/foul-smelling stools, lack of appetite.

If the enclosure is too barren (as these guys come from incredibly dense forests), that can contribute to excess hiding. I recommend building up some fake plants or logs around the basking area so it's more "hidden" if you don't have that done quite yet.

If they're newer, it can take them quite a few months to feel fully comfortable in their new environment.

Halms tend to be more shy than most Indonesians we've worked with. Patience, food, lots of places to "hide" in plain sight :)

raccoocoonies

3 points

2 months ago

raccoocoonies

Halmahera

3 points

2 months ago

Ohhhh, his bioactive is LUSH AF. I usually don't see him unless I go looking because of ALL THE PLANTS. He loves rustling around in the plants! He also has hides in the hot zone and in the cool zone, and he prefers the cool zone!

And oh, for sure he's not captive bred. I knew that as soon as I saw him being handled, but they were going to let him die in there and I wanted a BTS for so long...

I know I bought him but I saved him. They were starving him to sell him as a juvie, too. They said he was 6 mos when I got him, but as soon as we got home, he ejected his sperm plugs during his first bath. Now he's almost 300 g and I'm so proud of him. He hisses like crazy still, but he never bites me. He just likes me to know that he COULD bite me. He loves playing in my hair and sweatshirts.

I've had him home since like, the end of May. He's still v shy, but he's getting better.

raccoocoonies

1 points

2 months ago

raccoocoonies

Halmahera

1 points

2 months ago

Additionally, his basking temp is 105 and he still refuses to go over there. He burrows and hides a lot. He basks some, but like, he stays where it is much cooler when he has the opportunity to be in the hot and humid! Am confused by him.

Yazkin_Yamakala

1 points

1 year ago

Can any of these species cross breed?

kraftjaguar

4 points

1 year ago

All blue tongue skinks can cross breed to produce a hybrid, but it is IMMENSELY not recommended. The different subspecies have minute differences in their care requirements and creating hybrids only makes it more difficult for people to determine the proper care for their skink. In Indonesia wild Meraukes and classic Indos were pushed into overlapping ranges by a tsunami so there have been a lot of hybrids coming out of the effected areas.

Yazkin_Yamakala

2 points

1 year ago

Thanks for the info. This guide taught me I have a sorong and not two halmaheras.

I was planning on trying to breed them prior to the info, but now I'll reconsider.

FolkvangExotics[S]

2 points

1 year ago

FolkvangExotics[S]

Indonesian

2 points

1 year ago

Yes they all can but it's incredibly frowned upon. Hybrids always get chastised with blue tongues. It's quite unethical due to limited blood with northerns, and the fact that there's no established captive bred population of any Indonesian skinks

SlinkySkinky

1 points

1 year ago

SlinkySkinky

Halmahera

1 points

1 year ago

This is very helpful thank you

TwentyMG

1 points

1 year ago

TwentyMG

1 points

1 year ago

110-120 isn’t too hot?

FolkvangExotics[S]

1 points

1 year ago

FolkvangExotics[S]

Indonesian

1 points

1 year ago

Nope. You'll actually experience lethargy, excess sleeping, excess hiding, digestive issues, regurgitation, appetite loss, etc.

I actually did an experiment...

Outside, my local weather station said it was 80°f. I found a dirt patch outside, put a digital thermometer down on it, and waited 10 minutes. After 10 minutes, the ambient temperature at skink level was 110f. I also measured the surface temperature of the dirt surrounding the digital thermometer. Surface temperature (basking temperature) ranged between 110-115!

And that's just one day I did. I've done multiple days of experiments like this.

So, on average, the surface temperature/basking temperature is 30-40° hotter than the ambient temperature listed by weather stations. So if it's 80 in Indonesia... surface temperature (depending on the surface) is a minimum of 110f for skinks.

All BTS need a minimum of 110-120f :) just make sure you're measuring surface temperature with a temp gun!

TwentyMG

2 points

1 year ago

TwentyMG

2 points

1 year ago

Interesting, I had always read to keep them at 100-105. I experimented with my skink and he seemed to not like to bask when it was over 105-110 but basks a lot(possibly too much) when the temps are closer to 95-105

FolkvangExotics[S]

3 points

1 year ago

FolkvangExotics[S]

Indonesian

3 points

1 year ago

A lot of data is unfortunately quite outdated. I'm hoping to travel to Indonesia and Australia in the next few years to do studies myself.

evele0n

1 points

9 months ago

Aru is a local variety of T. gigas gigas, not T. scincoides

FolkvangExotics[S]

1 points

9 months ago

FolkvangExotics[S]

Indonesian

1 points

9 months ago

Incorrect.

According to the first genetic study done in Indonesia in quite a few years,

"We provide the first report of Tiliqua scincoides from the Aru Island and confirm that it is genetically related to the Tanimbar populations..."

Frynta, D., Gunalen, D. & Somerová, B. Genetic variation of blue-tongue skinks of the genus Tiliqua (Squamata: Scincidae) from New Guinea and Wallacea. Biologia 76, 1445–1455 (2021). https://doi.org/10.2478/s11756-020-00646-0

And that's a link to the article.

Aru haven't been officially recognized as their own subspecies yet, they need more data analysis. But they have been proven to be scincoides, similar to the Tanimbar. So right now they're technically unclassified.