False Map Turtle

🔤 Taxonomy

Graptemys pseudogeographica is the accepted scientific name for this species.

Common names used in the hobby:

• False map turtle

📌 Description

A North American basking map turtle that needs clean flowing-style water, strong filtration, UVB, and a large dry basking platform.

Adults are usually about 9-27 cm, with large differences caused by sex, origin, age, and condition. Females can become much larger than males, so adult housing should be planned for the larger possible animal.

🌍 Distribution

Large rivers, oxbows, sloughs, and backwaters of the central United States, often with basking logs over open water.

Captive care should reproduce the useful river functions: clean water, moderate movement, enough depth, stable resting points, and a dry basking area over the water. Visual retreat options reduce panic and constant diving.

🌡 Climate across the native range

Monthly climate normals from reviewed GBIF occurrence locations:

Weather data by WorldClim v2.1 · Monthly normals queried by Herpeton Academy from raster values; relative humidity is derived from vapor pressure and mean temperature.

Location references use GBIF.org occurrence data where available; original occurrence records retain their source dataset licenses.

⚖️ Legal status

As of 2026-06-05, this article records Graptemys pseudogeographica as CITES Appendix III, EU Annex C, and Bern Convention not relevant. Local ownership, registration, transport, sale, breeding, import, and release rules may still apply. Keep invoices, breeder or origin details, transfer/import documents, and identification photos; do not rely on a verbal seller claim alone.

🤌 Husbandry

Aquatic turtles need more than a tank of water: provide swimming depth, strong filtration, a dry basking platform, secure exits, and enough space to turn normally.

Plan at least a 120 x 60 x 60 cm setup for one appropriately sized animal, about 0.72 m² of footprint. Larger females and outdoor systems need more water volume and stronger basking structures.

🧪 Filtration and water quality

Maintain zero ammonia and nitrite, oversized filtration, and regular partial water changes. Turtle waste loads are much heavier than fish loads, so aquarium filters should be sized with a large safety margin.

Cloudy or smelly water usually means the system is undersized, overfed, or not maintained often enough. Dirty water causes skin, shell, eye, and respiratory problems faster than most keepers expect.

💡 Lighting

Provide a clear day-night cycle of about 10-12 hours. UVB should be planned around Ferguson Zone 2, with a measured basking or exposure zone and shaded retreats rather than flooding the whole enclosure with UV.

Indoor animals need bright visible light and a reliable UVB source unless they receive regular safe outdoor sunlight. Glass does not provide useful UVB, and old lamps can still shine visibly while producing weak biological output.

🌡 Heating and temperature

Typical structured targets are:

• ambient or water: 22-26°C
• basking surface: 30-34°C
• cool retreat: 20-22°C
• night: 20-24°C

Use thermostats and separate thermometers. Heat should create a usable gradient, not one uniform hot box. Check surface temperatures, water temperature, and the animal’s actual choices before changing feeding or seasonal routines.

💧 Humidity and water

Humidity around the aquatic setup is usually 40-80%, but the practical priority is water quality and a completely dry basking area. The platform must not wobble, sink, or leave the shell wet.

Water dishes, pools, platforms, and ramps should be easy to clean and should not abrade skin, toes, or shell. For aquatic species, water depth must allow normal movement while still giving safe resting and exit options.

🌿 Enclosure and decoration

Use open swimming space, resting points near the surface, a dry warm platform, and visual cover. Avoid narrow gaps where the turtle can wedge itself. Cohabitation is optional and often more trouble than it is worth.

Secure boundaries matter. Aquatic turtles climb ramps, hoses, and filter parts; box turtles push weak edges and dig under loose barriers. Outdoor pens need predator protection and escape prevention from the start.

🥗 Feeding

Juveniles take more animal food; adults should receive a varied mixed diet with aquatic invertebrates, quality pellets, leafy greens, occasional safe fish, and calcium sources. The recorded interval is every 2-3 days, adjusted for age, season, and body condition.

Feed for stable body condition rather than maximum appetite. Remove leftovers, record weight, and adjust frequency for age, season, temperature, reproductive state, and activity. Use calcium and supplements according to diet quality and UVB access.

🥚 Breeding notes

This is an oviparous species. Typical clutch size is about 6-15 eggs, with incubation around 26-30°C for about 60-90 days. Breeding should only be attempted with legal, unrelated, healthy animals and a plan for offspring placement.

🩺 Common problems

Poor water quality, soft-shell problems from weak UVB or calcium, shell rot, retained scutes, and stress from mixing turtles are common risks. Use an experienced reptile veterinarian for injuries, swelling, respiratory signs, persistent refusal to eat, or abnormal buoyancy.

Quarantine new animals, record weights, monitor shell and skin condition, and use an experienced reptile veterinarian for injuries, swelling, persistent refusal to eat, respiratory signs, or abnormal buoyancy.

📌 Conclusion

False Map Turtle care can work well for keepers who can maintain a clean aquatic system, UVB, a dry platform, and stable long-term hygiene. It should not be bought impulsively or released outdoors.

📚 Sources and further reading

Key sources checked for this revision:

• CITES Appendices, checked 2026-06-05
• Checklist of CITES Species
• U.S. Fish & Wildlife Service turtle CITES appendices chart
• European Commission wildlife trade overview
• TFTSG account: Graptemys pseudogeographica
• Animal Diversity Web: Graptemys pseudogeographica
• USGS range map data release
• GBIF Backbone Taxonomy
• WorldClim v2.1