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Ghost Glass Frog

Sachatamia ilex


Also known as the Limon Giant Glass Frog, this is the largest glass frog species in Central America. Males having a sv length of up to 29mm and females a little larger at up to 34mm. The dorsal surface is bright emerald green and the ventral a very pale green to translucent. The frogs inner organs can be seen under the skin. The nostrils are prominent on top of the snout and the eyes are striking being silver with black reticulations and point forward. Toes are webbed and fingers less so.


Found in very humid foothill forest, this individual was above a small fast running stream in near darkness under foliage in the Tapanti National Park in Costa Rica. As a species it is found from southern Nicaragua down to northern west Colombia and a small area in north Ecuador.


Although listed as Least Concern, like a lot of amphibians one of the biggest risks to this species is habitat loss. The message is getting through to many in Costa Rica. This is a wonderful creature found in an incredible country.

No species ID suggestions

31 Comments (1–25)

triggsturner a month ago

Thank you Antonio. I am glad you enjoyed this little guy. I included several images at different angles. I think the rear view really shows off the forward facing eyes.

These guys are just "impossibe",a transparent body is a kind of super hero feature :-) Great series Robert,first shot is super cool,congrats on the well deserved SOTD and thanks for sharing

triggsturner a month ago

Thank you Felix, Rach and Michael for your kind comments. They are very appreciated.

Michael Strydom
Michael Strydom a month ago

Congrats on SOTD!! another really great shot!! :)

remkinloch a month ago

Congratulations on your SOTD. Great images of an amazing little creature!

Felix Fleck
Felix Fleck a month ago

Amazing little fella! Nice shots, Rob. Congrats!

DanielePralong a month ago

Congratulations Robert, this mesmerizing frog is our Spotting of the Day:

"A Ghost Glass Frog (Sachatamia ilex) shows remarkable dark reticulated patterns on its irises in our Spotting of the Day! Eye morphology is often used to describe and classify frogs, with criteria such as pupil shape and iris coloration and patterns. Sachatamia ilex belongs to the family Centrolenidae, a diverse group of arboreal frogs from the neotropics that shows spectacular variations in iris coloration and patterns between species. Figure 8 in the following paper shows a wide assortment of irises of centrolenid frogs: "



triggsturner a month ago

Thanks for the comment Leuba. Yeah, those eyes are quite hypnotic!

Leuba Ridgway
Leuba Ridgway a month ago

Unreal !!

triggsturner a month ago

Thank you for your comment James.

JamesPriest2 a month ago

Amazing looking eyes. Great pic

triggsturner a month ago

Thank you for the nomination Ashley and thank you Maria for your kind comment.

Maria dB
Maria dB a month ago

What a beautiful frog and wonderful photo series!

AshleyT a month ago

Your spotting has been nominated for the Spotting of the Week. The winner will be chosen by the Project Noah Rangers based on a combination of factors including: uniqueness of the shot, status of the organism (for example, rare or endangered), quality of the information provided in the habitat and description sections. There is a subjective element, of course; the spotting with the highest number of Ranger votes is chosen. Congratulations on being nominated!

triggsturner a month ago

Thanks Hema. It's a brilliant country and generally thier attitude toward thier wildlife was fantastic. I would go back any time.

Hema a month ago

I was in Costa Rica this April too.Loved the place .

Hema a month ago

Amazing details and very cute frog.

triggsturner a month ago

Thank you Dawn for your comment and support of this spotting.

triggsturner a month ago

Thank you Pam. And thanks for the explanation, all I could think of was the kids texting so much thier eyes went funny! Lol. Now it makes a bit more sense ;)

That is an awesome find!

pamsai a month ago

Wonderful series of Photos Rob... and I agree with everyone, the eyes are amazing. And as Mark said, it looks like the kids were let loose with Texta colours, or at the very least a ball point pen, and scribbled on those eyes! In Australia Texta Coloured Pencils are the set all the kids want.

triggsturner a month ago

Thank you Rach for your comment. Much appreciated.

remkinloch a month ago

Great series of photos, and yes, those eyes are amazing. I think they look like painted china bowls. Incredible detail on something so tiny.

triggsturner a month ago

Thank you guys for your great comments and support. The eyes definitely have it! Mark, what is Texta and why shouldn't the kids play with it? I am intrigued.

arlanda a month ago


Provincia Cartago, Costa Rica

Lat: 9.88, Long: -83.68

Spotted on Apr 12, 2018
Submitted on Nov 26, 2018

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