Deep scarlet legs and cheerful yellow eyes peer from a borrowed shell as the Scarlet Reef Hermit grazes nuisance algae without disturbing corals. Peaceful and hardy, it is a favorite for reef cleanup crews.
Temperament
Common health issues
- Nutritional deficiency
- Parasites
- Dehydration
Care at a glance
- ExerciseLow
A calm, unhurried swimmer โ peaceful surroundings suit them best.
- GroomingEasy tank upkeep
No grooming here โ steady water quality and routine tank care do it.
- Living spaceNano-tank friendly
Happy in a small, stable, well-filtered tank.
- Owner experienceGreat first pet
Forgiving and easy to get started with.
- Commitment2โ5 years
Plan for a long, loving relationship.
Health to watch: Nutritional deficiency ยท Parasites ยท Dehydration
๐ Care guide
The Scarlet Reef or Red Reef Hermit Crab (Paguristes cadenati) is a Caribbean species reaching about 2.5 cm, recognizable by its bright red legs and yellow eyestalks. It is a dedicated grazer of hair algae, cyanobacteria, and film algae and is calmer and less shell-aggressive than many hermits. Keep in any reef tank at 24-26C, salinity 1.024-1.026, pH 8.1-8.4, with slow acclimation and no copper. Offer spare empty shells so it can upgrade as it grows and to reduce the chance it bothers snails. It appreciates supplemental feeding of dried algae and leftover food when natural algae runs low. Reef-safe and peaceful, it coexists well with other cleanup crew members and makes an excellent low-maintenance janitor.
Frequently asked questions
How active is a Scarlet Reef Hermit Crab?
Low. A calm, unhurried swimmer โ peaceful surroundings suit them best.
How much maintenance does a Scarlet Reef Hermit Crab need?
Easy tank upkeep. No grooming here โ steady water quality and routine tank care do it.
What tank size does a Scarlet Reef Hermit Crab need?
Nano-tank friendly. Happy in a small, stable, well-filtered tank.
Is a Scarlet Reef Hermit Crab a good fit for first-time owners?
Great first pet. Forgiving and easy to get started with.
How long do Scarlet Reef Hermit Crab live?
2โ5 years. Plan for a long, loving relationship.
What health issues affect the Scarlet Reef Hermit Crab?
Keep an eye out for Nutritional deficiency, Parasites, Dehydration. These are worth raising with your vet, along with any screening they recommend.
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