Invertebrates · Mexican Red Knee Tarantula
Mexican Red Knee Tarantula Care Guide
Native to southern Mexico, the Mexican Red Knee requires a specific temperature and humidity gradient. This guide covers enclosure setup, feeding, handling, and common health issues.
The Mexican Red Knee tarantula thrives in an environment that mimics its native habitat. Provide a secure, escape-proof enclosure with a minimum floor space of 8-10 inches (20-25 cm) in diameter for adults. A height of 6-8 inches (15-20 cm) allows for proper ventilation and temperature stratification.
Temperature is crucial: maintain a basking spot at 78°F to 82°F (25°C to 28°C) with a cooler area around 68°F to 72°F (20°C to 22°C). Avoid direct heat sources like heat lamps, opting for ceramic heat emitters or heat mats instead. Humidity should range from 60% to 80%, with a gradient that encourages moisture-seeking behavior.
Create a humidity zone by placing water dishes and substrate that retains moisture near the cooler area. Avoid over-misting as this can lead to respiratory issues. Monitor temperature and humidity levels daily, adjusting as necessary to maintain optimal conditions.
Feeding is straightforward: offer 1-2 prey items per week for adults, depending on size and appetite. Use crickets (size 1/4 inch) or small mealworms as initial food sources. As the spider grows, transition to larger prey like 1-inch roaches or even small frogs occasionally. Always thaw frozen-thawed prey before feeding.
Handling is surprisingly pleasant for a tarantula. Start with short sessions (10-15 minutes) and gradually increase time as your Mexican Red Knee becomes more comfortable. Support the abdomen when picking up, and avoid handling during molting or breeding seasons.
Common health issues include respiratory problems from poor ventilation, fungal infections from high humidity, and metabolic bone disease from inadequate calcium supplementation. Monitor for signs like lethargy, labored breathing, or unusual webbing patterns.

