Classroom "Red Crab" Molting in River Tank

Students' 3-inch tan "red crab" (sold as red crab) hides in burrow 4 days. Found exoskeleton—likely molting. Asks if nocturnal, should they worry, and for crab experts.

Molting Behavior

Crabs hide extensively during molt (vulnerable). Exoskeleton find confirms it. Leave alone; do not disturb.

Care Notes

• Species ID uncertain—"red crab" may be a trade name.
• Omnivorous: shrimp pellets, veggies, protein.
• May eat small tankmates (danios, barbs).
• Needs land access (already provided).

No dedicated crab expert available. Monitor; ensure water quality. Molting takes days to weeks.