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Saltwater hermit crabs eat algae, seaweed, leftover fish food, detritus, mysis shrimp, brine shrimp, nori, and bristleworms. They are nature’s cleanup crew, but many reef keepers underfeed them without realizing it. That is often when snails start disappearing and coral gets nibbled. The fix is cheap, and it starts with one grocery store item. What…
Feed your hermit crabs once a day in the evening, about a pea-sized amount per crab. Rotate protein, fruit, vegetables, and calcium nightly for variety. That is the short answer, but many owners get the amount or timing slightly wrong without realizing it. Here is exactly when, how much, and what to av When to…
Many owners set up an expensive lamp in week one, and it can do more harm than good. So do hermit crabs need a light in the tank at all? Usually no. What your crabs actually need is simpler, cheaper, and easy to get wrong. Here is what matters, what does not, and the one…
Hermit crabs cannot eat onions, garlic, citrus fruits, table salt, commercial pellets with preservatives, dairy, chocolate, candy, pesticide-treated produce, or anything seasoned or processed. Hermit crabs are natural scavengers that eat a huge variety of foods, but the wrong item can make them seriously sick. The good news is the unsafe list is much shorter…
Hermit crabs stop eating because of stress, molting, wrong temperature, low humidity, a new environment, boring food, no salt water, loneliness, or illness. Hermit crabs do not starve themselves on purpose, so if yours is not eating, something in its environment needs to change. Work through these 9 causes in order, since the first few…
Feeding hermit crabs costs about $5 to $15 per month, even less if you share fresh food from your kitchen. They eat tiny amounts, and most of their favorite foods are things you already have at home. But the real number depends on how many crabs you keep and what you feed them, and that…
Yes, hermit crabs make noise, and the first time you hear it, you will not believe a tiny crab in a shell made that sound. They produce a chirping, croaking, or clicking noise owners describe as a cricket chirp crossed with a tiny frog croak, called stridulation. Hold a chirping crab and you can feel…
The safest way to get a hermit crab out of its shell is to never force it. Let it come out on its own, with a shallow tepid soak to encourage it if needed. A crab grips its shell so tightly that pulling can seriously injure or kill it, so it is worth asking why…
Most care guides give a flat no. The real picture is messier than that, and it is worth knowing before you panic about the one crab sitting alone in your tank right now. Do Hermit Crabs Need Company? The standard answer is yes. Hermit crabs are widely described as social animals, and most care guides…
To keep a hermit crab tank humid, use damp substrate, shallow water dishes, a sealed lid, and light misting when needed, holding 70 to 80 percent humidity. Humidity is not optional. Hermit crabs breathe through modified gills that must stay moist, and when the air runs dry, the danger builds so slowly that most owners…
A healthy adult hermit crab can live about 2 to 3 weeks without food, as long as it still has water and a safe, humid environment. Their slow metabolism helps them coast through short fasts, especially during molting, when they may not eat for weeks. Food is not the real danger, though. Water is. A…
Yes, hermit crabs climb constantly, and it is one of their favorite things to do. Owners sometimes worry when they see it, but a climbing crab is usually a happy, healthy crab. The surprising part is how well they do it, and how far a determined crab can get without you noticing. Is Hermit Crab…