At a glance: Tokay gecko morphs are hobby names for captive color and pattern lines. No peer reviewed, university, museum or veterinary source has tested the inheritance of any of them. Every mode listed below is a breeder report and not a proven result.
Tokay gecko morphs exist as named lines in the trade, but the science behind them is thin. The wild animal is gray with brownish red to bright red spots. Everything else on the market is a variation on that pattern or a selectively bred line.
This page owns the named list of tokay gecko color morphs. It states what each name describes, what breeders say about inheritance, and where the evidence stops. For the natural color range of the species, see the tokay gecko colors guide.
What the wild type looks like
The Animal Diversity Web describes the tokay (Gekko gecko) as gray with brownish red to bright red spots and flecks. It is among the largest geckos, reaching about 35 cm. Its range runs from northeastern India through the Indo Australian Archipelago.
Two natural facts matter when you judge any morph. A tokay can lighten or darken its skin to blend in or to signal to other animals. Males are more brightly colored than females.
A gecko photographed cold, stressed or freshly shed can therefore look quite different from the same animal an hour later.
Tokay gecko morphs chart
The table below is the tokay gecko morphs chart for the names in circulation. The wild type row is sourced. Every other row is a hobby name, and its inheritance mode is what breeders report.
| Morph | What it looks like | Inheritance | Source or label | Known health issues |
|---|---|---|---|---|
| Wild type | Gray to blue gray skin with brownish red to bright red spots and flecks | Not applicable (natural pattern) | Animal Diversity Web (University of Michigan) describes the coloration | None documented |
| Reduced pattern | Blue head, greener body, few spots | Incomplete dominant (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Blue headed green patternless | Blue head on a green body with little or no spotting | Recessive (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Powder blue patternless | Pale ice blue head and body, spots absent or faint | Recessive (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Granite | Dark gray to charcoal base with black spotting | Unclear, described as complex (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Pied or leucistic | White body with dark eyes, said to arise from granite stock | Unknown, tied to granite lines (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Super red | Heavy red coloring across the body | Codominant (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Platinum | Silver base with yellow spots | Recessive (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Candy dot | Dot pattern with no white banding and a striped tail | Recessive (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Diablo | Lavender base, yellow spots, black eyes, keeps white banding | Recessive (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
| Green galaxy | Green body, blue head, small spots | Not a morph, a line specific trait (reported) | hobby name, inheritance reported by breeders, not independently tested | None documented |
Read the inheritance column of this chart as a set of claims, not facts. Only one row rests on a scientific source, and that source describes color, not genes.
How to read tokay gecko morphs
A morph name describes what an animal looks like, and a morph tokay gecko is simply one that fits a named look. It does not prove a single gene is behind it.
In reptile breeding a recessive trait needs two copies to show, and a dominant trait shows with one. An incomplete dominant trait looks stronger with two copies. A polygenic or line bred trait comes from selecting many small effects over generations, so it will not follow a simple ratio.
The reported patternless and platinum lines are described as recessive. That would mean two visually normal parents can produce them. That claim has not been confirmed by a published breeding study in the sources opened for this page.
For the Punnett square basics, use the morph genetics guide.
Why tokay inheritance is hard to prove
Proving a mode of inheritance needs controlled pairings over several generations, and no such record has been published for tokays. A karyotype study reported a diploid number of 2n=38 (Patawang and colleagues, 2014). It found no differences between male and female karyotypes.
That means sex chromosomes are not visible under the microscope. It also leaves color genes unmapped for tokay gecko morphs.
Other geckos are better studied. A survey of 12 gecko species found both XY and ZW sex determination (Gamble and colleagues, 2015). The tokay was not among them, though the crested gecko was.
Do not assume another gecko’s genetics apply to tokay gecko morphs.
What breeders report about each line
The patternless lines, blue headed green and powder blue, are described as recessive. Both are said to lose the red spotting that defines the natural animal, leaving a plain blue or green body.
Reduced pattern is described as incomplete dominant, with a blue head and fewer spots. Super red is described as codominant, which would mean animals with two copies look redder than animals with one.
Platinum, candy dot and diablo are each described as recessive. Candy dot animals are said to lose the white banding, while diablo animals are said to keep it. These are useful details for identifying a name, but they remain claims.
Granite, pied and the changing morphs
Granite is the best known name. Breeders describe a dark gray or charcoal animal with black spots. It changes slowly from a normal look over roughly 6 months to 2 years.
That timing is a hobby report, and it fits what is documented about tokay skin changing color.
Pied or leucistic animals are described as white with dark eyes and are said to come from granite stock. A true leucistic animal lacks pigment cells over most of the body but keeps dark eyes. No source has tested the link to granite, so treat the connection as a plausible story and not a result.
Checking a morph before you buy
Ask for photos of both parents and of the animal at several ages. A juvenile sold as a rare morph may be a normal tokay in a pale phase.
A granite animal may not show its final look for two years. Ask which pairings produced it, and treat any claim of a proven gene as untested.
Ask for the hatch date and the clutch mates. A line that breeds true across a clutch is stronger evidence than one striking animal.
Price for any morph tokay gecko should follow the evidence. A hobby name with no tested inheritance is a color line and not a guaranteed genetic result. The wider gecko morph index shows how other species compare.
Health and welfare
No health condition tied to a tokay morph appears in the veterinary and scientific sources opened for this page. Some hobby lines in other reptiles carry known problems. This is a gap in the record and not proof of safety.
Keep a record of any eye, skin or neurological signs. Take the animal to a reptile veterinarian if they appear.
Husbandry drives most skin and shedding problems in captive reptiles. The Merck Veterinary Manual reptile section covers husbandry, skin disease and examination. It applies to any tokay regardless of color.
General care lives in the tokay gecko guide.
Where this fits in the database
Each tokay morph name belongs to the same family of hobby labels used across captive reptiles. The morph database lists the species where inheritance is documented.
For how the trade names traits, read the reptile morphs overview.
Frequently Asked Questions
Is there a tokay gecko morph that has proven inheritance?
No tokay gecko morph has proven inheritance in the sources opened for this page. Breeders report recessive, codominant and incomplete dominant modes, but no published breeding study confirms them. Treat a proven claim as a marketing statement.
Are tokay gecko color morphs rarer than the normal animal?
Usually, because most tokays sold show the natural pattern. Rarity says nothing about health or quality. A line may simply be newer or produced in fewer numbers.
Can a normal tokay change color like a morph?
Yes, within limits. The Animal Diversity Web notes that tokays can lighten or darken their skin. Color on a live tokay is not fixed, so one photo says little.
What does a granite tokay look like as an adult?
Breeders describe dark gray to charcoal skin with black spots. Reports say the look develops over 6 months to 2 years. A young animal is a poor guide to the adult.
Do tokay morphs have genetic health problems?
None are documented in the veterinary sources opened for this page. The absence of data is a gap, not a guarantee. Choose animals from keepers who share their records.
Which tokay gecko chromosomes are known?
A 2014 karyotype study found 2n=38 with no visible difference between the sexes. It did not map any color gene. No gene for any tokay morph has been identified.
Sources
- University of Michigan Museum of Zoology: Animal Diversity Web, Gekko gecko. https://animaldiversity.org/accounts/Gekko_gecko/
- Cytologia: Chromosomal Characteristics of NORs and Karyological Analysis of Tokay Gecko, Gekko gecko (Patawang et al. 2014). https://www.jstage.jst.go.jp/article/cytologia/79/3/79_315/_article
- Molecular Biology and Evolution: Gamble et al. 2015, RAD seq of gecko sex determining systems. https://academic.oup.com/mbe/article/32/5/1296/1130958
- Merck Veterinary Manual: Reptiles. https://www.merckvetmanual.com/exotic-and-laboratory-animals/reptiles