Species profile · Colubridae

Rhinechis scalaris

Complete care sheet and morph genetics registry for the ladder snake — husbandry parameters, diet, breeding and pairing calculator.

Serpent à échelonsTreppennatterCulebra de escalera
Adult size
1.2–1.6 m
Lifespan
15–20 yrs
Difficulty
Intermediate
Temperament
Diurnal
Activity
Diurnal
Reproduction
Oviparous
01

Husbandry requirements

Ladder Snake — origin: Iberian Peninsula (Spain, Portugal), the extreme Mediterranean south of France, Menorca and some coastal areas. Occupies dry, sunny habitats: garrigue, maquis scrub, rocky hillsides, vineyards and dry-stone walls..

Terrarium temperature gradient

Night min18 °C
Cool side22–25 °C
Warm side28–30 °C
Basking spot32–35 °C

A heliophilous Mediterranean species that thermoregulates in the sun: a real hot spot is necessary. A horizontal thermal gradient is essential. At night it can drop to 18-20 °C. A winter cooling period (brumation ~10-14 °C for 6 to 10 weeks) is beneficial to health and necessary for reproduction.

Enclosure (adult)
120 × 60 × 60 cm

Secure terrestrial terrarium with climbing opportunities

Minimum dimensions for one adult; larger is always preferable. Lid/openings perfectly locked (a powerful snake and a seasoned escape artist). Provide at least two hides (warm side and cool side), branches and rocks for climbing, and good ventilation to avoid stale air.

Humidity
40–60 %

An overall dry to moderate environment, in keeping with the Mediterranean climate. Avoid stagnant humidity. Temporarily raise the humidity or provide a humid hide during sheds.

Substrate
AspenCypress mulch / barkMediterranean-type soil-sand mixCrushed beech

A rather dry substrate but able to retain a little moisture locally. Offer a humid box (sphagnum/moss) to facilitate shedding. Ban a waterlogged substrate, a source of skin and respiratory infections.

UVB
Optional

Low to moderate UVB recommended for this diurnal, heliophilous species (Ferguson zone 2-3, tube of about 5-6%). Not strictly essential if the diet is well supplemented with vitamin D3, but beneficial to well-being and basking behaviour.

Water source
Always available

A bowl of clean, fresh water available at all times, large enough to allow the snake to immerse itself. Renew regularly. No need for a large permanent humid area.

Origin
Colubridae

Iberian Peninsula (Spain, Portugal), the extreme Mediterranean south of France, Menorca and some coastal areas. Occupies dry, sunny habitats: garrigue, maquis scrub, rocky hillsides, vineyards and dry-stone walls.

02

Feeding & health

Diet

Carnivore (rodents and birds) — Mice and rats of a suitable size; occasional chicks. Juveniles may accept small lizards or insects.

A very voracious feeder with a high metabolism. Strictly match prey size (width ~1 to 1.5 times that of the snake) and space out meals to avoid overfeeding and obesity. Feed preferably with thawed prey.

Breeding
Oviparous

Clutch 5–15 eggs/young. A winter brumation (~10-14 °C, 6 to 10 weeks) stimulates the reproductive cycle. Laying in spring/early summer; incubation of about 50 to 70 days at ~26-28 °C. The young show a juvenile ladder pattern that evolves into longitudinal stripes in adulthood (ontogenic change).

Health watch points
  • Snout abrasions (pointed rostral scale) from rubbing against the walls — frequent in this nervous snake that seeks to escape
  • Respiratory infections (an environment that is too cold, humid or poorly ventilated)
  • Incomplete sheds (dysecdysis) if humidity is insufficient
  • Mites (Ophionyssus natricis) and skin problems
  • Obesity and hepatic steatosis from overfeeding (a very voracious feeder)
03

Morphs & genetics

Registry of 2 documented genes and 1 named combos for Ladder Snake.

  • Albino (T-) amelanisticRec
  • Anerythristic (True Silver) axanthicRec
Named combos — 1 documented combined morphs
Snow
04

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

🧬

Ladder Snake × Ladder Snake

Probabilities per gene (independent loci).

GeneParent AParent B
Expected clutchSelect at least one gene on a parent.
05

Frequently asked questions

Answers to the most common questions about keeping the ladder snake.

How big does an adult Ladder Snake get?
An adult Ladder Snake typically measures 1.2–1.6 m (total adult length. a large, robust colubrid; males are often bulkier. can exceptionally approach 170 cm.).
What temperature and humidity does a Ladder Snake need?
A gradient of roughly 22–25 °C on the cool side to 28–30 °C on the warm side, with a basking spot of 32–35 °C. Humidity 40–60 %.
What does a Ladder Snake eat?
Carnivore (rodents and birds): Mice and rats of a suitable size; occasional chicks. Juveniles may accept small lizards or insects..
Is the Ladder Snake a good reptile for beginners?
Intermediate level. Defensive / Nervous. Bites readily and is more reactive than the Corn Snake (Pantherophis guttatus), especially in juveniles. Non-venomous (an aglyphous colubrid), but capable of repeated bites. Partly calms down with regular, gentle handling in adulthood. Plan ahead: a lifespan of 15–20 yrs.

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