Aaron Jousiffe

British high end reptile breeder based in the land of the rising sun. 🇯🇵❤️🇬🇧

[Aaron Jousiffe @Londonleopa]

ロンドンレオパでは、現在スタッフ2名募集中！
生き物が好きで優しく接することが出来るメンバーを探しています⭐️
興味がありそうな方が周りにいらっしゃったらシェアして頂ければ嬉しいです🫶

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#londonleopa
#leopardgecko
#reptiles
#animalwork

[Aaron Jousiffe @Londonleopa]

2026 Red diamond melanistic (black night) males

2026 Calcite male fresh from the egg!

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#londonleopa
#livingart
#leopa
#leopardgecko

[Aaron Jousiffe @Londonleopa]

今日、敷地内で見つけたEuprepiophis conspicillata(Jimuguri) (forest rat snake)です。今はホタルの季節で、毎年6月になると家の周りにたくさん現れます。背景にホタルが写っているのが分かりますか？

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#londonleopa
#herping
#snakes
#Japanesenature

[Aaron Jousiffe @Londonleopa]

Rhabdophis tigrinus
(Tiger keelback)
Kanagawa Japan.

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#londonleopa
#yamakagashi
#snakes
#reptiles
#kanagawa
#herping

[Aaron Jousiffe @Londonleopa]

Meet Black thunder our Takydromus tachydromoides!

Last year I hatched out an unusually darker than average Japanese grass lizard. I wonder if it’s heritable?🧐 let’s find out!

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#kanahebi

[Aaron Jousiffe @Londonleopa]

Green things with long tails!

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[Aaron Jousiffe @Londonleopa]

Spring at London leopa!

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[Aaron Jousiffe @Londonleopa]

Cool Coleonyx!

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[Aaron Jousiffe @Londonleopa]

@2994CANDLE Great for enrichment, not so great for egg collecting! 😅

[Aaron Jousiffe @Londonleopa]

Happy Hermann’s

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#londonleopa
#tortoise
#hermanns

[Aaron Jousiffe @Londonleopa]

Sunny spring weather equals fresh sheds for outdoor kept courting couples!

P siculus paulae male

Timon lepidus pseudo melanistic trobisch line with black eyes female.

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#londonleopa
#kanahebi

[CANDLE ハタノ @2994CANDLE]

屋外ケージ増設中…。 https://t.co/yMfGEfXm31

[Aaron Jousiffe @Londonleopa]

@2994CANDLE Very beautiful boy! The powder blue head, flanks and legs is amazing! 🤩

[Aaron Jousiffe @Londonleopa]

@webmast76129166 Stay safe on the road lovely people! 😘

[Aaron Jousiffe @Londonleopa]

@otsu_nettaigyo I know the feeling! I wasn’t prepared and was shitting bricks driving through the northern mountains this morning.

Stay safe mate. 🤝

[Aaron Jousiffe @Londonleopa]

On the ferry to North Rep!

Suite for the night, good grub and some training in preparation for the upcoming calorie intake over the weekend! 😅

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[Aaron Jousiffe @Londonleopa]

After nearly 9 years of test breeding and verification I think I’m finally ready to release the recessive gene that popped up in my breeding stock in 2017! Known in house as the oddball. However, out of respect for the gene’s birthplace and origin I thought a Japanese name would be more fitting and also a nod to the eye traits and visual traits in juveniles, I’m proud to introduce..

Hon’ei (本影) – “Umbra”

Novel recessive mutation in Eublepharis macularius, discovered in 2017 from low-viability neonates. Multiple generations of selective breeding have stabilized viability; current cohorts exhibit normal growth, fecundity, no overt pathologies.
Neonatal phenotype: pronounced eumelanin upregulation—melanophores densely populate dorsal epidermis, yielding near-uniform melanistic saturation (charcoal to jet-black in hatchlings). Suppresses endogenous banding patterns via ectopic melanin deposition, eliminating banding and dorsal ocelli. Pheomelanin restricted to lateral flanks and caudal tuberculate annuli—rusty-orange zones express as discrete, raised rings against the dark base. Most individuals exhibit striping and that is retained into adulthood.
Ocular: iris fully melanised, no visible pupillary margin (distinguishes from eclipse/cipher/marble eye/NDBE). Subtle peripheral xanthophore halo visible under flash and upon close inspection in bright light.
Limbs/ventrum: medial podial darkening from localized melanocyte density; ventral white reduced to thin marginal bands in some.
Ontogenetic modulation: post-hatching, eumelanin granules redistribute—dermal migration and scale-layer thickening reduce surface density, allowing pheomelanin expression to intensify laterally. Result: juveniles darkest (hyper-melanistic appearance), adults lighter but still warm-toned shadow, not true fade. Likely tied to metabolic rate decline or hormonal downregulation of melanophore activity.
Inheritance: autosomal recessive, stable segregation. No epistatic interactions or linkage observed; occasional ocular hypertrophy monitored—no morbidity.
Morph summary: hyper-melanistic recessive with selective pheomelanin retention. Elegant, brooding baseline—ideal for breeding depth into existing lines.

A select few will be available at north rep this weekend!

My gift to our community. Japan made, Japan first.

Ps, a comprehensive morph guide will be released and made public soon as well as to anyone who decides to add one to their collection.

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#londonleopa
#leopardgecko
#livingart