Spiny softshell (Apalone spinifera)
Photo: U.S. Fish and Wildlife Service Headquarters / Public domain · via Wikimedia Commons

Reptile · Semi-aquatic turtle

Spiny softshell care guide

Apalone spinifera

AdvancedVery large adult

The spiny softshell is a advanced-level semi-aquatic turtle from Southern Canada to northern Mexico. Adults reach Females 25–45 cm shell, males 13–22 cm and live 30–50 years in captivity. Fully aquatic: give a large water section with soft sand to bury in. Native and protected in Canada.

  • Enclosure 300 × 90 × 60 cm
  • Temp Water 24–27°C, basking 30–32°C
  • Humidity Not critical (aquatic)

How much does a spiny softshell cost in Canada?

Animal$40–120Typical captive-bred price
Bioactive enclosure$2210–3940Enclosure $1540–2910 · equipment $190–420 · bioactive supplies ≈ $510
Yearly upkeep$400–700Food, supplements, bulbs, power, vet fund
First year total$2650–4760All prices CAD, estimates

Spiny softshell quick facts

Skill level
Advanced
Adult size
Females 25–45 cm shell, males 13–22 cm
Lifespan
30–50 years
Activity
Diurnal
Native range
Southern Canada to northern Mexico
Minimum enclosure
300 × 90 × 60 cm (118 × 35 × 24 in, ≈ 428 US gal)
Housing
Best kept alone.
Temperature
Water 24–27°C, basking 30–32°C
Humidity
Not critical (aquatic)
UVB
Recommended
Diet
Carnivore – fish, insects, shrimp, earthworms, pellets
Bioactive style
Semi-aquatic (paludarium)

Spiny softshell enclosure & bioactive setup

Give one adult at least 300 × 90 × 60 cm (118 × 35 × 24 inches). Best kept alone. This species suits a semi-aquatic (paludarium) bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix8 cm
  3. Drainage – clay bio balls4 cm

Quantities assume about half the floor is land. The water half needs a filter and regular partial water changes.

Temperature: Water 24–27°C, basking 30–32°C. Humidity: Not critical (aquatic). UVB: Recommended.

What does a spiny softshell eat?

Carnivore – fish, insects, shrimp, earthworms, pellets. Feed adults every 1–2 days.

Handling, temperament & health

Fast, nervous and bites hard; minimise handling.

Health watch: Skin damage from rough decor and infections in dirty water.

Cleaning & maintenance schedule

Daily

  • Check water and air temperature; feed according to species.

Weekly

  • Change 20–30% of the water with dechlorinated water.
  • Rinse filter sponge in old tank water (never tap water) as needed.

Monthly

  • Top up leaf litter on land; prune plants at the waterline.

Yearly

  • Service the pump/filter fully.

Recommended for a spiny softshell bioactive

Quantities are for one minimum-size enclosure (300 × 90 × 60 cm).

Spiny softshell FAQ

Is the spiny softshell good for beginners?

The spiny softshell is an advanced species – best for experienced keepers. Fast, nervous and bites hard; minimise handling.

What size enclosure does a spiny softshell need?

At least 300 × 90 × 60 cm (about 118 × 35 × 24 inches, roughly 428 US gallons) for one adult. Best kept alone.

How much does a spiny softshell cost in Canada?

Typically $40–120 CAD to buy, about $2210–3940 CAD for a complete bioactive enclosure, and $400–700 CAD a year to keep.

What temperature and humidity does a spiny softshell need?

Temperature: Water 24–27°C, basking 30–32°C. Humidity: Not critical (aquatic).

What does a spiny softshell eat?

Carnivore – fish, insects, shrimp, earthworms, pellets. Feed adults every 1–2 days.

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This care sheet is general guidance from One Bioactive, not veterinary advice. Needs vary with age, locality and individual animals – confirm with your breeder and an exotics vet. Prices are typical Canadian ranges in CAD and change over time.