🐾 Land🐟 AquaticCare difficulty: IntermediateLegal complexity: High — restricted in many states
Paddle-tail newt
Pachytriton brevipes · also called Paddletail newt, Chinese paddle-tail newt, Stout newt, Pachytriton granulosus, Paramesotriton labiatus (former Pachytriton labiatus)
A stocky, almost fully aquatic newt from cool mountain streams, with smooth skin, a strong paddle-like tail, and a vivid orange-spotted belly. It is hardy and long-lived if kept cold and clean, but it is territorial and nippy toward tankmates, and US trade is now heavily restricted because the genus is federally listed as injurious wildlife.
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Quick facts
| Size | Medium: typically 5.5 to 7 in (14 to 18 cm) total length, with a robust body and broad, paddle-shaped tail |
| Lifespan | 10–20 years |
| Social needs | group |
| Native region | Southern China (cool, fast-flowing mountain streams) |
| Origin | Old World |
| Climate | ⛰️ Montane |
| Water type | 💧 Freshwater |
| Family | Salamandridae |
| Genus | Pachytriton |
Part of the Newts
Semi-aquatic salamanders kept in cool, clean, planted aquatic setups with land access. Many have toxic skin, so they are observation animals that require careful hand-washing and no casual handling. Many genera are now restricted in US trade under Lacey Act Bsal-fungus rules.
Habitat & space requirements
From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.
Life & growth stages
How this animal changes through its life — each stage often has its own care, diet and space needs.
Habitat & enclosure
Keep in a cool, cycled freshwater aquarium of at least 15 to 20 gallons (55 to 75 L) for a small group, with more floor area than depth (water around 8 to 12 in / 20 to 30 cm deep). They are stream animals that need cold, oxygen-rich water: hold temperatures between 60 and 68 F (16 to 20 C) and avoid anything above the low 70s F, as sustained warmth is lethal. Provide gentle to moderate flow, plenty of smooth rocks, caves, and tubes for territories, and a haul-out or floating cork so they can leave the water if they choose. UVB is not required.
Substrate
Use a bare bottom for easy cleaning or large, smooth river stones too big to be swallowed; avoid small gravel that can cause impaction. Build up plenty of rockwork, slate caves, and tubes to create defensible territories and hiding spots, and add hardy cool-tolerant plants or silk plants for cover.
Equipment & setup
Cooling is the priority: keep the tank in a cool room and use a fan across the surface or an aquarium chiller in warm climates; never use a heater. Run an efficient filter (canister or baffled hang-on) for clean, oxygenated water with gentle current, and add an air stone to boost oxygen. A reliable thermometer and a tight, fully sealed lid are essential, as they are strong escape artists. Subdued lighting suits them.
Diet
Carnivorous bottom-forager. Feed earthworms/nightcrawlers (an excellent staple, chopped to size), bloodworms, blackworms, whole frozen or live invertebrates, and sinking carnivore/newt pellets. Offer food every 2 to 3 days, target-feeding near each animal so dominant individuals do not monopolize meals. Remove uneaten food promptly to protect water quality. Variety and gut-loaded live foods prevent nutritional gaps.
Behavior & temperament
Largely aquatic, secretive, and most active in cool water; spends the day wedged under rocks or in caves and forages along the bottom. Notably territorial and food-aggressive, it may bite or nip the limbs and tails of conspecifics or tankmates, especially in cramped tanks; provide multiple hides and ample space, and watch for bullying. The skin produces mild toxins, so this is not a handling animal: handle only when necessary with wet, clean hands, never touch your eyes or mouth afterward, and wash thoroughly. Best kept singly or in well-spaced small groups with abundant cover.
Health
Heat stress is the leading killer; warm water causes refusal to feed, fungal and bacterial skin infections, and death. Other issues include bite wounds that become infected, bloat, and poor water quality. Maintain cold, clean, highly oxygenated water with good filtration and gentle flow. Avoid copper-based fish medications, which are toxic to amphibians. Quarantine new arrivals, as many are wild-caught and may carry parasites or arrive thin. Taxonomy in this group is muddled: trade 'paddle-tail newts' span several Pachytriton species (P. brevipes, P. granulosus, P. inexpectatus), and the orange-bellied 'spotless' animal long sold as Pachytriton labiatus is actually Paramesotriton labiatus, so labels are frequently wrong.
Tips, DIY & hacks
Check legality before acquiring: as of the 2025 US Fish and Wildlife rule, the genera Pachytriton and Paramesotriton are listed as injurious wildlife under the Lacey Act to prevent the spread of the Bsal fungus, so importation and interstate transport are prohibited even though keeping an animal you already own is generally still legal. Commit to active cooling before buying if your home gets warm, this is the single most important survival factor. Provide one more hide than the number of newts to reduce fighting, and separate any individual being bitten. Always dechlorinate water and rinse hands well after contact due to skin toxins, and keep a secure lid since they climb intakes and escape through small gaps.
Sources
- AmphibiaWeb: Pachytriton brevipes (database)
- Amphibian Species of the World: Pachytriton brevipes (reference)
- USFWS: Injurious Wildlife Listings (salamanders, Bsal) (government)
- Wikipedia: Paddle-tail newt (wiki)