For instance, a species like this that is normally green can be this sort of bright blue with axanthism, but an animal that is normally yellow will typically be white if that yellow pigment is genetically suppressed.
October 12, 2026 at 6:14 PM
For instance, a species like this that is normally green can be this sort of bright blue with axanthism, but an animal that is normally yellow will typically be white if that yellow pigment is genetically suppressed.
Maybe not the best name because axanthism doesn't always result in this same color—since it is caused by a lack of yellow pigment, the resulting color depends on what other natural pigments an animal has.
October 12, 2026 at 6:14 PM
Maybe not the best name because axanthism doesn't always result in this same color—since it is caused by a lack of yellow pigment, the resulting color depends on what other natural pigments an animal has.
(Posting in my personal capacity.) A rare genetic mutation called #Axanthism makes the skin of some American Green Tree #Frogs appear blue. Wanna see one? 👇🏼#science #conservation #research
October 8, 2026 at 7:51 PM
(Posting in my personal capacity.) A rare genetic mutation called #Axanthism makes the skin of some American Green Tree #Frogs appear blue. Wanna see one? 👇🏼#science #conservation #research
It very well could be. I looked up the name of the mutation: Axanthism
So, it could be affecting a tree frog since it affects yellow pigmentation
So, it could be affecting a tree frog since it affects yellow pigmentation
October 6, 2026 at 2:15 AM
It very well could be. I looked up the name of the mutation: Axanthism
So, it could be affecting a tree frog since it affects yellow pigmentation
So, it could be affecting a tree frog since it affects yellow pigmentation
@janejune.bsky.social Can you believe the beauty of that blue?🩵🐸💚🥰
The frog has a genetic mutation called axanthism. This condition stops the animal from producing yellow pigment. Normal green skin relies on a mix of blue and yellow layers; without the yellow layer, the frog appears bright blue.
The frog has a genetic mutation called axanthism. This condition stops the animal from producing yellow pigment. Normal green skin relies on a mix of blue and yellow layers; without the yellow layer, the frog appears bright blue.
August 28, 2026 at 9:01 PM
@janejune.bsky.social Can you believe the beauty of that blue?🩵🐸💚🥰
The frog has a genetic mutation called axanthism. This condition stops the animal from producing yellow pigment. Normal green skin relies on a mix of blue and yellow layers; without the yellow layer, the frog appears bright blue.
The frog has a genetic mutation called axanthism. This condition stops the animal from producing yellow pigment. Normal green skin relies on a mix of blue and yellow layers; without the yellow layer, the frog appears bright blue.
Big thanks to OM System for helping me document these moments in the wild! 📷🩵🐸
#HylaMeridionalis #Axanthism #WildlifeIllustration #NatureArt #OMSystem #FrogLove @omsystem.bsky.social #omsystemambassador
#HylaMeridionalis #Axanthism #WildlifeIllustration #NatureArt #OMSystem #FrogLove @omsystem.bsky.social #omsystemambassador
March 13, 2025 at 8:41 AM
Big thanks to OM System for helping me document these moments in the wild! 📷🩵🐸
#HylaMeridionalis #Axanthism #WildlifeIllustration #NatureArt #OMSystem #FrogLove @omsystem.bsky.social #omsystemambassador
#HylaMeridionalis #Axanthism #WildlifeIllustration #NatureArt #OMSystem #FrogLove @omsystem.bsky.social #omsystemambassador
Yesterday, I went out to find a Southern Green Frog (Hyla meridionalis) with axanthism – a rare genetic condition that gives them a gorgeous sky-blue color. 🩵
I was incredibly lucky to find not one, but two individuals with this condition – definitely made the long drive worth it! 🥰
I was incredibly lucky to find not one, but two individuals with this condition – definitely made the long drive worth it! 🥰
March 2, 2025 at 9:06 PM
Yesterday, I went out to find a Southern Green Frog (Hyla meridionalis) with axanthism – a rare genetic condition that gives them a gorgeous sky-blue color. 🩵
I was incredibly lucky to find not one, but two individuals with this condition – definitely made the long drive worth it! 🥰
I was incredibly lucky to find not one, but two individuals with this condition – definitely made the long drive worth it! 🥰
Feeling blue? A citizen scientist asked about blue (axanthic) frogs, leading to a pandemic-era internship project to explore the spatial, phylogenetic, and temporal prevalence of axanthism in frogs lead by Drs. Molly Womack and Rayna Bell. Read the results this #AWNews at AmphibiaWeb.org
September 22, 2025 at 4:05 PM
Feeling blue? A citizen scientist asked about blue (axanthic) frogs, leading to a pandemic-era internship project to explore the spatial, phylogenetic, and temporal prevalence of axanthism in frogs lead by Drs. Molly Womack and Rayna Bell. Read the results this #AWNews at AmphibiaWeb.org
went to a restaurant in my hometown that i hadn't been to in many years and i completely forgot there's a bunch of taxidermy/animal models with informational plaques all over the walls. but i never noticed the insects before!! what a nice eastern lubber. also leopard frog with um axanthism
May 11, 2025 at 3:30 AM
went to a restaurant in my hometown that i hadn't been to in many years and i completely forgot there's a bunch of taxidermy/animal models with informational plaques all over the walls. but i never noticed the insects before!! what a nice eastern lubber. also leopard frog with um axanthism
Check out our latest paper on the genetic basis of snake colour variation.
GTP cyclohydrolase II (gch2) and axanthism in ball pythons: a new vertebrate model for pterin-based pigmentation
onlinelibrary.wiley.com/doi/10.1111/...
GTP cyclohydrolase II (gch2) and axanthism in ball pythons: a new vertebrate model for pterin-based pigmentation
onlinelibrary.wiley.com/doi/10.1111/...
April 17, 2025 at 3:21 AM
Check out our latest paper on the genetic basis of snake colour variation.
GTP cyclohydrolase II (gch2) and axanthism in ball pythons: a new vertebrate model for pterin-based pigmentation
onlinelibrary.wiley.com/doi/10.1111/...
GTP cyclohydrolase II (gch2) and axanthism in ball pythons: a new vertebrate model for pterin-based pigmentation
onlinelibrary.wiley.com/doi/10.1111/...
"Land managers in a wildlife sanctuary in Kimberley, Western Australia, spotted the mutant amphibian when it hopped into their workshop and sat on a bench gazing at them." Smart choice, blue frog! #frogs #wildlife
'Lovely freak of nature': Mutant blue frog hops into wildlife sanctuary workshop
Researchers in Australia spotted a magnificent tree frog with blue skin — the result of a rare genetic mutation called axanthism, which suppresses yellow pigments that usually tint the frogs green.
www.livescience.com
July 17, 2024 at 4:48 PM
I found this super rare blue leopard frog when I was 12 or so. Never seen another one like it! It's called axanthism, where there's no yellow pigment. Green-yellow = blue.
August 15, 2024 at 4:54 PM
I found this super rare blue leopard frog when I was 12 or so. Never seen another one like it! It's called axanthism, where there's no yellow pigment. Green-yellow = blue.
Check it out... he's the one on the right! Usually these lizards are green but he appears blue because he lacks yellow pigment. These lizards were caught off the same wall and we actually found quite a few little blue dudes in this area!💙
Axanthism comes from the Greek ξανθός (xanthos = blonde).
Axanthism comes from the Greek ξανθός (xanthos = blonde).
April 11, 2025 at 2:36 AM
Check it out... he's the one on the right! Usually these lizards are green but he appears blue because he lacks yellow pigment. These lizards were caught off the same wall and we actually found quite a few little blue dudes in this area!💙
Axanthism comes from the Greek ξανθός (xanthos = blonde).
Axanthism comes from the Greek ξανθός (xanthos = blonde).
Had to zoom in so it's a bit pixelly, but my green frog (Lithobates clamitans) is blue. Axanthism? Is there a #FrogSky or #Herpetology feed?
June 6, 2025 at 5:08 PM
Had to zoom in so it's a bit pixelly, but my green frog (Lithobates clamitans) is blue. Axanthism? Is there a #FrogSky or #Herpetology feed?
GTP cyclohydrolase 1 and axanthism in ball pythons: a new vertebrate model for pterin-based pigmention https://www.biorxiv.org/content/10.1101/2024.05.22.595308v1
GTP cyclohydrolase 1 and axanthism in ball pythons: a new vertebrate model for pterin-based pigmention https://www.biorxiv.org/content/10.1101/2024.05.22.595308v1
Pterin (also known as pteridine) pigments are responsible for many of the bright colours observed ac
www.biorxiv.org
May 27, 2024 at 5:37 AM
GTP cyclohydrolase 1 and axanthism in ball pythons: a new vertebrate model for pterin-based pigmention https://www.biorxiv.org/content/10.1101/2024.05.22.595308v1
Taken in the Arboretum a couple of weeks ago
A fairly rare blue frog
It's actually a regular Green Frog with axanthism, a condition that inhibits the production of the yellow pigment that's required to produce green when combined with blue.
#photographer #BlueFrog #nature
pbase.com/image/175790...
A fairly rare blue frog
It's actually a regular Green Frog with axanthism, a condition that inhibits the production of the yellow pigment that's required to produce green when combined with blue.
#photographer #BlueFrog #nature
pbase.com/image/175790...
Blue Frog by John Quin
pbase.com
September 6, 2025 at 12:00 AM
Taken in the Arboretum a couple of weeks ago
A fairly rare blue frog
It's actually a regular Green Frog with axanthism, a condition that inhibits the production of the yellow pigment that's required to produce green when combined with blue.
#photographer #BlueFrog #nature
pbase.com/image/175790...
A fairly rare blue frog
It's actually a regular Green Frog with axanthism, a condition that inhibits the production of the yellow pigment that's required to produce green when combined with blue.
#photographer #BlueFrog #nature
pbase.com/image/175790...
Have you heard of axanthism? This Green Frog has it! 🐸
It’s a mutation that prevents animals from producing yellow pigment. So it makes green animals appear blue!
It’s a mutation that prevents animals from producing yellow pigment. So it makes green animals appear blue!
November 1, 2024 at 9:39 PM
Have you heard of axanthism? This Green Frog has it! 🐸
It’s a mutation that prevents animals from producing yellow pigment. So it makes green animals appear blue!
It’s a mutation that prevents animals from producing yellow pigment. So it makes green animals appear blue!
It's leap day. Post frog.
A frog I saw last year with a mutation called axanthism that reduces yellow pigment, making it appear partially blue-ish. Probably a northern green frog ((Lithobates clamitans melanota).
A frog I saw last year with a mutation called axanthism that reduces yellow pigment, making it appear partially blue-ish. Probably a northern green frog ((Lithobates clamitans melanota).
February 29, 2024 at 5:44 PM
It's leap day. Post frog.
A frog I saw last year with a mutation called axanthism that reduces yellow pigment, making it appear partially blue-ish. Probably a northern green frog ((Lithobates clamitans melanota).
A frog I saw last year with a mutation called axanthism that reduces yellow pigment, making it appear partially blue-ish. Probably a northern green frog ((Lithobates clamitans melanota).
I recently read that in rare cases, some frogs have a mutation called axanthism that reduces yellow pigment, which makes them appear blue instead of green. Then bam! I saw one on the trail.
September 15, 2023 at 1:16 AM
I recently read that in rare cases, some frogs have a mutation called axanthism that reduces yellow pigment, which makes them appear blue instead of green. Then bam! I saw one on the trail.
"Axanthism" is when a frog is missing its yellow.
From the frogs community on Reddit: This blue frog has been showing up in our backyard for the last two years
Explore this post and more from the frogs community
www.reddit.com
June 6, 2026 at 12:54 PM
"Axanthism" is when a frog is missing its yellow.