What Eats Amphipods? Amphipods as Prey

Amphipods are beneficial to the aquarium’s ecosystem, but they can overpopulate the aquarium. A large number of amphipods in your aquarium can look unappealing. What you can do is bring something that eats amphipods. But what eats amphipods?

Many saltwater fish, such as wrasse and mandarin fish, enjoy eating amphipods. But if you have a freshwater aquarium, there are still options for you! This blog will introduce the creatures that eat amphipods in freshwater ecosystems.

If you’re intrigued to know which fish this includes, read on!

What Are the Predators of Amphipods?

Amphipods are zooplankton and a great food source for almost every fish. That means any fish can be a predator of amphipods. From tiny fish to big sharks, they can all eat amphipods.

Amphipods are not easy to get. They usually hide under rocks, corals, and other places and come out at night to roam around. So it can be challenging for fish in the ocean to eat amphipods. But in an aquarium, you can easily kill amphipods by putting in some freshwater fish.

Amphipods are eaten by wrasse, a marine fish with 600 different species. Wrasse can be the best predator for amphipods in the aquarium. These fish are effective carnivores that prey primarily on a variety of small invertebrates.

You have probably heard of mandarin fish and thought, “Do mandarin fish eat amphipods?” Yes, mandarin fish can be the ultimate predator for amphipods. The Mandarin Dragonet fish is a saltwater fish, but you can keep them in your aquarium to get rid of amphipods.

Mandarin fish love to eat copepods and amphipods to survive. They are small and very inexpensive, which is best for an aquarium or reef tank.

Do Clownfish Eat Amphipods?

While clownfish may help you get rid of amphipods, there are both advantages and disadvantages to consider. The advantage is that clownfish eat amphipods and can help control their population. However, the disadvantage is that getting rid of all the amphipods with just a few clownfish can be difficult.

Clownfish typically eat both copepods and amphipods for food, so they may not be able to completely wipe out the amphipod population on their own.

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Amphipods love to roam around in the darkness to hide from predators, which is why clownfish are not that effective at getting rid of amphipods from aquariums. At night, when amphipods emerge from hiding places like under rocks, clownfish sleep.

What Fresh Water Fish Eats Amphipods?

Almost every type of freshwater fish eats amphipods. Amphipods can be a natural food source for freshwater fish when they are not hunting. In freshwater aquariums, there are many fish that enjoy eating amphipods. These include some varieties of plecos, killifish, gouramis, and even some cichlids!

If you’re looking for a species of fish specifically designed to eat amphipods in a freshwater tank, then the Siamese Algae Eater is your best choice. The Siamese Algae Eater is known for its voracious appetite and loves to feast on amphipods!


In addition to fish, there are also other predators of amphipods in a freshwater aquarium, such as snails. Apple snails, Ramshorn snails, and Malaysian trumpet snails all love to eat amphipods. You can also get shrimp that will consume amphipods as part of their diet.

Guppy is a type of freshwater fish that feeds on amphipods. They can survive on amphipods when they are not hunting. Amphipods are an essential element of freshwater fish diets. That’s why you should always grow amphipods in your freshwater aquarium.

What Saltwater Fish Eats Amphipods?

If you are thinking about getting amphipods for your reef tank, make sure to add saltwater fish that eat amphipods. Seahorses are the most common saltwater fish that consume amphipods. They are carnivores and will eat amphipods when they are not hunting.

Another saltwater fish that feeds on amphipods is the royal gramma fish. They belong to the Grammatidae family, which is a group of brightly colored sea-dwelling basslets. Royal grammas feed primarily on small invertebrates like amphipods, copepods, and mysids.

The yellow tang is another saltwater fish that loves to feed on amphipods. They are known for their bright yellow color and are commonly found in tropical reef tanks, where they feed on small invertebrates like amphipods.

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You can also add octopus because it also eats amphipods. The diamond goby is another saltwater fish that eats amphipods. The most popular saltwater fish that eats amphipods is the wrasse. Almost every kind of wrasse eats amphipods, so it will be easier for you to get wrasse for your reef tank.

How Did Amphipods Get in My Tank?

Frequently, amphibians are naturally introduced into closed aquarium systems when live sand and/or live rock have been added. If the temperature in the tank is slightly warmer and there is a food source available, they will begin to multiply.

The amphipods in live rocks and corals often become visible to the naked eye after they’re transferred from their natural habitat (the ocean) into an aquarium or fish tank. These little creatures tend to hide under objects like rocks and sand so that bigger fish can’t eat them. After being placed in a new environment, the amphipods feel safe enough to come out from hiding.

What Are Amphipods Good For?

You may want to get rid of amphipods from your aquarium or reef tank. But amphipods are an essential element for your fish and their ecosystem. Amphipods are frequently important parts of other aquatic systems where they aid in the recycling of nutrients and serve as a source of high-quality food for a wide range of creatures, including crayfish, fish, amphibians, water birds, and semiaquatic mammals.

Amphipods are the most abundant microinvertebrates and the keystone species of groundwater, springs, and saltwater. They eat zooplankton and keep the ecosystem balanced. Amphipods play an important role in groundwater and springwater systems. They are also a natural food source for saltwater and freshwater fish.

Amphipods are important in processing detritus, and as a result, they produce a lot of feces and tiny particles of organic matter, which other invertebrates eat. 

Are Amphipods Good for Reef Tank?

Amphipods can be one of the primary food sources for your reef tank fish. Seahorses, octopus, wrasse, mandarin, shrimp, crabs, and much more saltwater fish can eat amphipods. Amphipods can also help to balance the ecosystem by eating zooplanktons, which are a source of food for other large fish.

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However, amphipods can overpopulate and make the reef tank look unappealing. That’s why you need fish that eat amphipods to keep their population balanced.


How Long Do Amphipods Live For?

Amphipods can live for up to two years, provided other predators don’t eat them. These tiny crustaceans have many Natural enemies, like big fish and sea mammals that hunt them for food. Despite this, amphipods can survive in most environments for up to two full years with a good source of shelter and food.

How Big Can Amphipods Get?

Amphipods can grow to be anywhere from 5 mm to 20 mm (3/16 to 3/4 inch) as adults. Talitroides topitotum measures 7 mm on average, while Talitroides allaudi is a little smaller at only 3.5mm. The largest of these species, Arcitalitrus sylvaticus (Haswell), has the potential to reach 8mm (3/8 inch). Although they come in other colors, too, aquatic species are most often seen in white.

Are Amphipods Harmful to Fish?

No, amphipods are not harmful to fish. Instead, amphipods can be very nutritious for other big fish. Keeping amphipods in your aquarium can add versatility to your fish’s diet. Amphipods can easily be digested but cannot attack other fish because of their size.

According to researchers, amphipods play a vital role in keeping the ocean’s ecosystem balanced. They don’t cause harm to any other sea creatures. However, an overpopulation of amphipods in reef tanks can become a problem.


After learning what eats amphipods, you can bring the fish mentioned in this blog. However, if you want to grow amphipods in a reef tank or aquarium, keep an eye on them. It is because amphipods can grow within weeks, and if your fish don’t eat them, they will overpopulate.

Amphipods can benefit both freshwater and saltwater fish, so they can be used for either. Do not think amphipods are harmful to fish because they are not.

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