Species profile · Colubridae

Drymarchon melanurus

Complete care sheet and morph genetics registry for the black-tailed cribo — husbandry parameters, diet, breeding and pairing calculator.

Middle American Indigo SnakeCriboCribo à queue noireTexas Indigo Snake (subspecies erebennus)Unicolor Cribo
Adult size
1.8–2.4 m
Lifespan
20–25 yrs
Difficulty
Advanced
Temperament
Diurnal
Activity
Diurnal
Reproduction
Oviparous
01

Husbandry requirements

Black-tailed cribo — origin: From Mexico (Atlantic slope) across Central America to northern Colombia and Venezuela. Occupies varied habitats: humid and dry tropical forests, forest edges, savannas and open areas, often near water..

Terrarium temperature gradient

Night min21 °C
Cool side24–27 °C
Warm side28–31 °C
Basking spot32–35 °C

Diurnal, heliophilic species: provide a true basking spot under a lamp (guarded to prevent burns) and a marked thermal gradient. A moderate nighttime drop is tolerated; do not stay below 21 °C for extended periods.

Enclosure (adult)
240 × 120 × 90 cm

Spacious, sturdy and fully secured terrestrial terrarium

A very active, powerful and large snake: provide the largest possible space (ideally at least the length of the snake). Lockable lid and solid structure — a formidable escape artist. Provide sturdy hides, a few low branches and a large ground-level exercise area.

Humidity
60–80 %

A humid tropical atmosphere but well ventilated: avoid stagnant air. Maintain a more humid zone around the water source and a drier side. Light misting as needed.

Substrate
Coco fibreTopsoil free of fertilizer and pesticideOrchid bark or cypress mulchFree-draining bioactive substrate

Absorbent substrate, to be cleaned and renewed very often: droppings are liquid, abundant and foul-smelling (high metabolism). Avoid a constantly waterlogged substrate, a source of bacterial dermatitis.

UVB
Recommended

Recommended. An active diurnal species: UVB lighting (Ferguson zone 2–3, UVI ~2–3, T5 tube 5–7%) supports metabolism, vitamin D3 synthesis and vitality. Combine with bright ambient lighting on a regular photoperiod.

Water source
Always available

A large water container allowing full immersion of the body: the animal bathes and defecates in it frequently. Clean and renew very regularly (abundant liquid waste) to keep the water clean at all times.

Origin
Colubridae

From Mexico (Atlantic slope) across Central America to northern Colombia and Venezuela. Occupies varied habitats: humid and dry tropical forests, forest edges, savannas and open areas, often near water.

02

Feeding & health

Diet

Carnivore — apex predator, ophiophagous — Rodents, birds and chicks, fish, amphibians and other snakes (including venomous ones in the wild).

Very high metabolism: frequent feedings required. In captivity, a rodent-based diet (rats/mice) possibly supplemented with fish or chicks. Ophiophagous and opportunistic: house STRICTLY alone (risk of cannibalism). Non-venomous. Many individuals in the trade are wild-caught (WC), often heavily parasitized and stressed — favour captive-bred (CB) specimens. The species is generally not listed under CITES (not to be confused with D. couperi, protected in the United States), but check local regulations before acquiring one.

Breeding
Oviparous

Clutch 4–15 eggs/young. Breeding is often stimulated by a cooling/light brumation period (~15–20 °C for a few weeks). Eggs are incubated at around 27–29 °C for approximately 75–90 days.

Health watch points
  • Respiratory infections (temperature too low or insufficient ventilation)
  • Internal and external parasites, very common in wild-caught individuals
  • Stomatitis (mouth rot)
  • Bacterial dermatitis / scale rot linked to soiled or overly damp substrate
  • Obesity and hepatic lipidosis from overfeeding
03

Morphs & genetics

Registry of 3 documented genes for Black-tailed cribo.

  • Leucistic (Pearl) white criboRec
  • Hypomelanistic goldenRec
  • Pied (Paradox)Dom
04

Pairing calculator

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

🧬

Black-tailed cribo × Black-tailed cribo

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 black-tailed cribo.

How big does an adult Black-tailed cribo get?
An adult Black-tailed cribo typically measures 1.8–2.4 m (total adult length. a very robust and muscular snake; some exceptional specimens exceed 2.6 m. both females and males reach large sizes.).
What temperature and humidity does a Black-tailed cribo need?
A gradient of roughly 24–27 °C on the cool side to 28–31 °C on the warm side, with a basking spot of 32–35 °C. Humidity 60–80 %.
What does a Black-tailed cribo eat?
Carnivore — apex predator, ophiophagous: Rodents, birds and chicks, fish, amphibians and other snakes (including venomous ones in the wild)..
Is the Black-tailed cribo a good reptile for beginners?
Advanced level. Lively, intelligent and very active. Can be defensive in its enclosure (loud hissing, tail vibration, bites) but generally handles calmly once out. Non-venomous, but with a powerful bite. Plan ahead: a lifespan of 20–25 yrs.

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