Care guide
Chinese Swimming Scorpion
Lychas mucronatus
A small, fast tropical scorpion that needs humidity and respect more than handling.
Lychas mucronatus
Chinese Swimming Scorpion: Advanced Care Guide
Keeper Snapshot: A small, fast tropical scorpion that needs humidity and respect more than handling.
Group: ScorpionsDifficulty: Spice 3-4: Intermediate / AdvancedSetup: Tropical bark/ground scorpionHandling: No bare-hand handling. Use catch cups, long forceps, and a locked lid.
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Snapshot
| Temperature | 75-82 F |
|---|---|
| Humidity | Ambient 65-80% with cross ventilation; damp lower substrate, dry bark perches |
| Setup Type | Tropical bark/ground scorpion |
| Substrate | 2-4 in damp coco fiber or soil mix with cork slabs and dry upper retreats. |
| Feeding | Small prey weekly |
| Care Difficulty | Spice 3-4: Intermediate / Advanced |
| Handling | No bare-hand handling. Use catch cups, long forceps, and a locked lid. |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Enclosure Format / Size Class
- Juvenile: small secure deli cup or acrylic with bark cover.
- Adult: compact tropical enclosure with tight lid and cork cover.
Warnings First
- Fast escape risk.
- Venom risk should be treated conservatively.
- Do not keep wet without ventilation.
- Cross ventilation low on two opposite walls is the priority. Damp substrate under a bark slab with no airflow is where cuticle fungus starts on this species.
Simple Care
- Keep substrate lightly damp, not soupy.
- Cross ventilation low on two opposite walls; tropical does not mean sealed.
- Provide cork bark or bark-like retreats with dry perch surfaces.
- Shallow water dish with pebbles in it so small instars cannot drown.
- Use tools for all maintenance.
Advanced Keeper Notes
Enclosure & Microclimate
- Cross-ventilation matters because tropical does not mean stagnant.
- A shallow water source or damp moss pocket can help humidity stability.
- In practice, put the vents low on two opposite walls at or just above the substrate line, with a second set higher up if the enclosure has height for bark. Air then crosses the damp substrate layer and rises past the cork, which is the pattern that lets a bark-dwelling scorpion sit on a dry perch above a moist floor. Lid-only venting gives you the reverse: dry bark over motionless, saturated air at the base.
- Ventilation and ambient humidity are a single trade. Hold 65 to 80% by keeping the lower substrate damp and running a water dish, and let the vents flow. Restricting airflow to hold a reading is the specific failure this species' existing note is warning about, and The fix is more air, not less water.
- Judge by hand and by looking at the bark, not by a wall gauge. The lower substrate should be cool and damp with no free water when squeezed, while the exposed cork faces dry between mistings. Bark that never dries means the enclosure needs more airflow.
- Keep a shallow water dish with pebbles or coarse grit so the waterline sits below the rim. Small instars of a bark scorpion drown in open dishes, and the stones give them a way out while the dish feeds humidity in at floor level.
- Mist under the cork and into the substrate beneath it rather than over the whole enclosure. That builds the damp pocket at the base where the animal retreats and leaves the upper perches dry, which is exactly the vertical gradient this species uses. A quick spritz on one bark face also brings it out to drink.
Feeding, Growth & Maintenance
- Feeding: small crickets or roach nymphs at or under body length, smaller for instars. Young eat every 4-7 days, adults roughly weekly; remove any uneaten prey within a day so it can't harass the scorpion. Use long tongs over a catch container, never fingers.
- Growth: matures over roughly 5-6 molts. A premolt animal stops eating and hides. Clear out every feeder then, and leave the soft, pale new molt strictly alone until it hardens and darkens.
- Maintenance: spot-clean boluses and feeder remains. This species tolerates more moisture than most buthids given its wetland origin, so a lightly damp substrate with a shallow water dish is fine, but keep a dry retreat available too. Keep transfers tool-based.
Possible Origin / Range
- Likely native range: South and Southeast Asia, with Chinese records under the hobby common name.
- Habitat translation: Warm humid bark, ground cover, and protected crevices.
Advanced Keeper Details
- Go by the animal in the cup, not the size on the guide. Ours ship at different stages and the care shifts with them.
- Heat should be measured at the animal's level, not guessed from the room or lid.
- Sources: the full Big Z APA 7 reference list lives at References.
Lychas mucronatus
Chinese Swimming Scorpion
Big Z's Quick Verdict: A small, fast tropical scorpion that needs humidity and respect more than handling.
Group: ScorpionsDifficulty: Spice 3-4: Intermediate / AdvancedSetup: Tropical bark/ground scorpionHandling: No bare-hand handling. Use catch cups, long forceps, and a locked lid.
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Care Snapshot
| Temp | 75-82 F |
|---|---|
| Humidity | Ambient 65-80% with cross ventilation; damp lower substrate, dry bark perches |
| Setup | Tropical bark/ground scorpion |
| Substrate | 2-4 in damp coco fiber or soil mix with cork slabs and dry upper retreats. |
| Feeding | Small prey weekly |
| Handling | No bare-hand handling. Use catch cups, long forceps, and a locked lid. |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Recommended Big Z's Setup
- Burrow Buddy
- Tropical burrow mix
- Cork bark
- Secure locking lid
Critical Notes
- Fast escape risk.
- Venom risk should be treated conservatively.
- Do not keep wet without ventilation.
- Cross ventilation low on two opposite walls is the priority. Damp substrate under a bark slab with no airflow is where cuticle fungus starts on this species.
Care Basics
- Keep substrate lightly damp, not soupy.
- Cross ventilation low on two opposite walls; tropical does not mean sealed.
- Provide cork bark or bark-like retreats with dry perch surfaces.
- Shallow water dish with pebbles in it so small instars cannot drown.
- Use tools for all maintenance.
Feeding, Growth & Maintenance
- Feeding: small crickets or roach nymphs at or under body length, smaller for instars. Young eat every 4-7 days, adults roughly weekly; remove any uneaten prey within a day so it can't harass the scorpion. Use long tongs over a catch container, never fingers.
- Growth: matures over roughly 5-6 molts. A premolt animal stops eating and hides. Clear out every feeder then, and leave the soft, pale new molt strictly alone until it hardens and darkens.
- Maintenance: spot-clean boluses and feeder remains. This species tolerates more moisture than most buthids given its wetland origin, so a lightly damp substrate with a shallow water dish is fine, but keep a dry retreat available too. Keep transfers tool-based.
Current Big Z's catalog: Yes
Lychas mucronatus
Chinese Swimming Scorpion: Advanced Care Guide
Keeper Snapshot: A small, fast tropical scorpion that needs humidity and respect more than handling.
Group: ScorpionsDifficulty: Spice 3-4: Intermediate / AdvancedSetup: Tropical bark/ground scorpionHandling: No bare-hand handling. Use catch cups, long forceps, and a locked lid.
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Snapshot
| Temperature | 75-82 F |
|---|---|
| Humidity | Ambient 65-80% with cross ventilation; damp lower substrate, dry bark perches |
| Setup Type | Tropical bark/ground scorpion |
| Substrate | 2-4 in damp coco fiber or soil mix with cork slabs and dry upper retreats. |
| Feeding | Small prey weekly |
| Care Difficulty | Spice 3-4: Intermediate / Advanced |
| Handling | No bare-hand handling. Use catch cups, long forceps, and a locked lid. |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Enclosure Format / Size Class
- Juvenile: small secure deli cup or acrylic with bark cover.
- Adult: compact tropical enclosure with tight lid and cork cover.
Warnings First
- Fast escape risk.
- Venom risk should be treated conservatively.
- Do not keep wet without ventilation.
- Cross ventilation low on two opposite walls is the priority. Damp substrate under a bark slab with no airflow is where cuticle fungus starts on this species.
Simple Care
- Keep substrate lightly damp, not soupy.
- Cross ventilation low on two opposite walls; tropical does not mean sealed.
- Provide cork bark or bark-like retreats with dry perch surfaces.
- Shallow water dish with pebbles in it so small instars cannot drown.
- Use tools for all maintenance.
Advanced Keeper Notes
Enclosure & Microclimate
- Cross-ventilation matters because tropical does not mean stagnant.
- A shallow water source or damp moss pocket can help humidity stability.
- In practice, put the vents low on two opposite walls at or just above the substrate line, with a second set higher up if the enclosure has height for bark. Air then crosses the damp substrate layer and rises past the cork, which is the pattern that lets a bark-dwelling scorpion sit on a dry perch above a moist floor. Lid-only venting gives you the reverse: dry bark over motionless, saturated air at the base.
- Ventilation and ambient humidity are a single trade. Hold 65 to 80% by keeping the lower substrate damp and running a water dish, and let the vents flow. Restricting airflow to hold a reading is the specific failure this species' existing note is warning about, and The fix is more air, not less water.
- Judge by hand and by looking at the bark, not by a wall gauge. The lower substrate should be cool and damp with no free water when squeezed, while the exposed cork faces dry between mistings. Bark that never dries means the enclosure needs more airflow.
- Keep a shallow water dish with pebbles or coarse grit so the waterline sits below the rim. Small instars of a bark scorpion drown in open dishes, and the stones give them a way out while the dish feeds humidity in at floor level.
- Mist under the cork and into the substrate beneath it rather than over the whole enclosure. That builds the damp pocket at the base where the animal retreats and leaves the upper perches dry, which is exactly the vertical gradient this species uses. A quick spritz on one bark face also brings it out to drink.
Feeding, Growth & Maintenance
- Feeding: small crickets or roach nymphs at or under body length, smaller for instars. Young eat every 4-7 days, adults roughly weekly; remove any uneaten prey within a day so it can't harass the scorpion. Use long tongs over a catch container, never fingers.
- Growth: matures over roughly 5-6 molts. A premolt animal stops eating and hides. Clear out every feeder then, and leave the soft, pale new molt strictly alone until it hardens and darkens.
- Maintenance: spot-clean boluses and feeder remains. This species tolerates more moisture than most buthids given its wetland origin, so a lightly damp substrate with a shallow water dish is fine, but keep a dry retreat available too. Keep transfers tool-based.
Possible Origin / Range
- Likely native range: South and Southeast Asia, with Chinese records under the hobby common name.
- Habitat translation: Warm humid bark, ground cover, and protected crevices.
Advanced Keeper Details
- Go by the animal in the cup, not the size on the guide. Ours ship at different stages and the care shifts with them.
- Heat should be measured at the animal's level, not guessed from the room or lid.
- Sources: the full Big Z APA 7 reference list lives at References.