How can I keep crabs alive? What do crabs eat? If you have these questions in your mind this guide will help you for sure.

Crabs are considered delicious food that can deliver a unique taste along with plenty of nutrients. Keeping crabs alive has to be sure for food. If you are a fan of crabs, you must know that keeping crabs alive lets you have their taste at its best. To do that, feeding is essential. If you have common questions like, what do crabs eat? How Can I keep crabs alive? Or how should I feed crabs? This article will help you.

 

What Do Crabs Eat?

Crabs are omnivores creatures that mainly depend on Algae and Protein. They love arranging their diet based on the Carotene. Therefore, they pay attention to finding Red and green algae when they are in the ocean. The decaying matter that contains protein, shrimps, small fish species, and even the sea snails are the favorite food of the carbs. Sea snails have become more favorable for Crabs due to two reasons, having a snail shell and as a food for the crabs.

If you intend to keep them in your tank small worms such as bloodworms and tubifex worms will be good food for the crabs. If you are concerned about the “what kinds of things do crabs eat” then they are in your possession, you will be able to provide similar things to crabs such as,

  • Frozen shrimp, plankton, or any specific food purchased from the nearest pet store
  • Dried or fresh seaweed (You may find fresh seaweed on the beach or purchase from an ornamental fish store)
  • Lettuce, zucchini, apples, oranges, and potatoes.
  • Raw fish, meat, or dried fish.
  • Hermit crab food pellets are for online sale.
  • Fish food flakes.
  • Dry cat or dog food

The main reason for having brighter skin is having more and more Carotene elements in the crab’s food. Most of the crab farmers provide egg-related food sources to the crabs due to the same reason. If you are a farmer or have the intention of selling crabs, giving eggs, small pieces of vegetables, and fruits will be a better way to earn a higher price.

When it comes to the crabs that have Red and orange colors in their bodies, you will have to provide Food with high Carotene concentration as a sure thing. Otherwise, the price dropping will cost you lots of money as a crab seller.

What Do Crabs Eat When They Are In A Fish Tank?

You don’t have to worry about what do crabs eat when they are in your possession. What matters is how you give food to your Crabs when they are in a tank along with fish. As you know, crabs don’t swim similar to fish. Although you provide food to the crabs by just throwing them into the water, fish might collect them before reaching the bottom. What happens next is to lose the daily food ratio for crabs. If you can simply deliver the food to the bottom, that will be a better way.

What to Feed Pet Crabs

If you’re keeping crabs as pets, you’ll need to replicate their natural diet as closely as possible. Here’s a comprehensive list of foods that are suitable for pet crabs:

Food Category Examples
Proteins Frozen shrimp, raw fish, bloodworms, tubifex worms
Vegetables Lettuce, zucchini, seaweed (fresh or dried)
Fruits Apples, oranges
Commercial Foods Hermit crab pellets, fish food flakes
Other Egg-based foods, small pieces of cooked meat

Remember, variety is key to ensuring your crab gets all the necessary nutrients. I rotate through different food types to keep my crabs healthy and their colors vibrant.

What Should I Worry About When Keeping Crabs Alive?

 Other than worrying about what crabs eat, you should maintain its habitat as it likes to keep the crab alive for months. If your intention is just to keep it alive, this article will help you. Space is one of the most crucial things.

You need to allocate a water tank along with 2×2 cubic meter space. The more the number of crabs increases in the tank, the more you will have to increase the space of the tank. Also, you must provide hiding places for the crabs. If you are a fish keeper, you will have to add more structures than the fish require. Unless you provide structures to climb and stay relaxed, crabs will get stressed and die in the end.

 

What Will Crabs Eat When They Are Being Transported?

 Usually, crabs are not fed when they are being transported from one place to another and it is a bit time-consuming process. After tying the crabs, their metabolism is reduced to a lower level and the food requirement also decreases. The only thing when transporting the carbs is water. After reading the article, you will know these things.

More details on crab transportation can be found in this Wikipedia article on crabs.

Should I feed crabs all day?

Feeding crabs all day is unnecessary and can lead to issues like water contamination and aggression. I typically follow this schedule:

  • Adult Crabs: Feed once every two days.
  • Juvenile Crabs: Feed daily due to their higher nutritional needs.

It’s also best to feed crabs in the evening since most species are nocturnal and more active during this time.

What do crabs eat when they are babies?

Juvenile or baby crabs depend on algae, worms, decaying protein, small shrimps, and clams in the shallow water. They will discover things on sandy floors and can depend on them until they become adults. If you have juvenile crabs in your tank, you will be able to keep them alive by providing cat and dog food to them as they depend on protein sources. The most important thing is not just food but habitat. You must provide hiding structures for the crabs, although they are adults or baby cribs. 

Conclusion: What Do Crabs Eat?

Crabs are omnivores with a varied diet that changes based on their habitat, size, and species. Whether in the wild or in a tank, providing the right balance of plant and protein sources is crucial to their health. With proper care and feeding, your crabs can thrive and display their natural behaviors.

For more tips on crab care and diet, check out my related article on the Best Sri Lankan Mud Crabs and Types of Crab in the World.