Hermit Crab Rock
Earns 18 Aqua Points, worth £0.18 off a future order. How points work
- Arrive alive guarantee
- Overnight, oxygen packed
- You pick the day
Livestock delivery, done properly
- Overnight insulated delivery on fish orders, £19.95, and free collection near Gatwick
- Arrive-alive promise plus our Perfect Health Arrival guarantee
- You choose the delivery day at checkout. We only show days we can genuinely deliver
- £35 minimum on livestock orders. Dry goods ship free alongside fish
Marine Fish Perfect Health Promise
All marine fish have a Perfect Health Arrival guarantee. For the following reasons, we cannot guarantee beyond that.
A number of different reasons can affect why a marine fish does not settle into its new environment. These range from:
- Unsuitable water conditions: incorrect pH, high ammonia and nitrite levels.
- Tank bullies: some marine fish are very passive and will not mix well with more boisterous tank mates.
- Incorrect tank size: please research the fish you are buying, as some will become stressed in a tank that is too small.
If you have any problems on arrival
Please contact us straight away and we will extend your guarantee until the fish is healthy again. You must call on the arrival day to activate this.
01293 749046Credit notes
If any of your aquatic life dies during our guarantees and has been acclimatised in a mature aquarium, please take a photo and email it across and we will send you a credit note.
Please email photographs of the deceased specimens to sales@aquaticstoyourdoor.co.uk.
About this fish
What is its maximum size?
Typically grows to approximately 3–5 cm, depending on the species and the size of the shell it occupies.
Where is its origin and where is it exported from?
Marine hermit crabs are found throughout tropical and subtropical oceans worldwide, particularly across the Indo-Pacific and Caribbean regions.
Is it reef compatible?
Generally reef compatible, with some caution. Hermit crabs are opportunistic scavengers that feed on algae, detritus and leftover food. They are useful members of the aquarium clean-up crew, helping to remove uneaten food and nuisance algae. However, some individuals may disturb unsecured coral frags, compete with snails for shells or occasionally prey on small and weakened invertebrates.
What should I feed it?
Feed a varied diet consisting of marine algae, algae wafers, spirulina-based foods and small amounts of meaty foods, such as mysis shrimp and finely chopped seafood. They will also scavenge leftover food, detritus and naturally occurring algae within the aquarium.
How many can I keep?
Can generally be kept in small groups in a suitably sized aquarium, provided there is sufficient food, space and a good supply of appropriately sized empty shells. Avoid overcrowding, as competition for food and shells can lead to aggression. Providing a selection of different shell sizes will help reduce territorial behaviour.
How compatible is it with other fish?
Generally peaceful and suitable for most marine community and reef aquariums. However, hermit crabs may compete with snails for shells and can become prey for predatory fish such as triggerfish, pufferfish and larger wrasses. Provide plenty of spare shells to minimise competition.
Water parameters
Temperature: 23–27°C
pH: 8.1–8.4
Specific gravity (salinity): 1.023–1.025
If it does not arrive alive, you do not pay for it.
Photograph the bag unopened, send it to us within four hours of delivery, and we will put it right with a refund or a replacement.* Our guarantee on marine fish covers their health on arrival. If anything concerns you, please ring us on the day they arrive and we will extend it until the fish is healthy again.
*Whether we refund or replace is our decision and depends on the fish and its cost. A replacement may travel with a future order rather than straight away.