Are Goldfish Bottom Feeders: (Let’s Clear Up the Confusion)

Are goldfish bottom feeders? Do goldfish feed from the bottom of their tank? If so, what food should they eat, and which other types of fish make good companions for this activity?

Well, it turns out that pet goldfish tend to feed from the bottom, right above the substrate – but there are a few essential details you need to know about safe and healthy nutrition for this beloved pet fish!

In this blog post, we’ll look at why gold fish like to feed from the bottom of the tank, what type of fish food is ideal for them

Are goldfish bottom feeder fish

Plus some potential alternatives!, and finally, examine several fantastic species that are suitable tank mates.

Let’s dive in and learn more about caring for your goldfish with proper nutrition – both filtration based and around their munching habits!

Are Goldfish Bottom Feeders?

Are goldfish bottom dwellers? Yes, goldfish are, in fact, bottom feeders. This is because they naturally search for food near the bottom of the fish tank or water. Goldfish typically feed on algae and other organisms, such as insect larvae and invertebrates, that live on the substrate at the bottom of their environment. 

How many goldfish in a 10 gallon tank

Goldfish have well-adapted mouthparts to help them search for food at the base of a pond or aquarium, usually amongst stones or gravel. They also tend to “mouth” plants that grow near or around them while looking for food particles stuck on some leaves or stems. 

Overall, goldfish are known to be omnivorous scavengers by nature, and their diet can often include both plant matter and live prey items found at the bottom of an aquatic environment.

Do You Need a Bottom Feeder with Goldfish?

Yes, goldfish feed from the bottom of their tank, but there’s more to consider regarding their nutrition. You need a bottom feeder with goldfish to help keep the aquarium clean and provide them with additional variety in their diet.

Bottom dwellers are species of fish that primarily scavenge for food at the bottom of an aquarium. They help keep an aquarium clean by consuming residue and other waste organic matter that accumulates on the substrate or walls.

Goldfish are omnivorous, which means they will eat several types of food, including algae wafers and sinking pellets. A bottom feeder can also provide additional variety to your goldfish’s diet by feeding goldfish at bottom of tank, the leftovers from your goldfish’s meals.

Bottom feeders also add activity to a tank and increase oxygenation due to their constant swimming patterns.

Can Goldfish Eat Bottom Feeders?

Yes, goldfish can eat other bottom feeders in their tankAlthough small fish such as guppies and shrimp should be avoided, large fish tank bottom feeders such as Plecostomus (or plecos) are an excellent food source for your small goldfish.

Most aquarists recommend feeding them to your gold fish at least once a week or so.

When choosing a suitable bottom-feeding fish for your tank mates, ensure they are significantly larger than the goldfish themselves—at least twice its size. This will help ensure that the smaller species don’t get swallowed up by the bigger ones!

Additionally, consider adding snails and other invertebrates to supplement their diet if you want to provide them with living prey only some of the time. 

Best Bottom Feeder Fish List for Freshwater Aquariums

Bottom feeder for goldfish tank: If you want to add a bottom feeder to your tank, here are some of the best bottom feeders for goldfish tank:

  • Corydoras Catfish
  • Siamese Algae Eater
  • Amano Shrimp
  • Hillstream Loaches
  • Flying Fox Fish
  • Bristlenose Pleco
  • Kuhli Loach

Each species has different dietary needs, so research the type you are interested in and provide them with a diet that meets their specific requirements.

Numerous species can be great tank mates for your goldfish, so research what would work best depending on the size and setup of your fish tank.

Common bottom feeders with goldfish like Plecos and loaches work great with gold fish if given appropriate space for both fish species in the same tank.

Natural Habitat for Goldfish

Goldfish, also known as Carassius auratus, is a cold water fish species originating from East Asia. They prefer slow-moving water in temperate climates and can usually be found in rivers, ponds, and lakes.

Goldfish mainly occupy fresh inland waters and wetlands in temperate regions worldwide.

In the wild, they feed on tiny aquatic organisms such as insect larvae, crustaceans, worms, and vegetation.

In captivity, goldfish can be fed various floating food such as store-bought pellets, flakes, and freeze-dried treats. They also accept live foods such as worms, daphnia, and brine shrimp.

How Often Do You Feed Goldfish?

Goldfish need to be fed daily, but it’s important to feed them appropriately. Their diet should consist of various foods to get the necessary nutrients.

It is generally recommended that goldfish be fed two meals daily, with each meal consisting of no more than what they can consume in two minutes.

It’s essential to keep an eye on your goldfish and ensure they are not overeating. If you notice that there is still food left after two minutes, you should reduce the amount of food given at each meal.

Goldfish are natural scavengers, so they also look for food particles stuck on some leaves or stems. They may even try to round them while looking for fish food.

Therefore, it’s vital to ensure your bottom feeder goldfish tank is regularly cleaned and maintained to provide a healthy environment for your goldfish.

Remember: Goldfish may unintentionally gulp air while feeding at the surface, causing them to lose balance and flip upside down. To prevent this feeding goldfish issue, take care when providing food – soak flake foods briefly before serving and opt for non floating food pellets.

3 best bottom feeder fish food & Diet :(food for bottom feeders)

Hikari Goldfish Bio-Gold

Hikari Goldfish Bio-Gold is a high-quality food formulated for goldfish that contains all the essential vitamins and minerals they need to stay healthy. It includes wheat germ, spirulina, and garlic to help promote a healthy immune system.

TetraFin Goldfish Flakes

TetraFin Goldfish Flakes are made with natural ingredients and provide complete nutrition for your fancy goldfish. It contains omega-3 fatty acids that help support digestive health and energy levels.

Wardley Premium Pellet

Wardley Premium Pellet is a slow-sinking fish food specifically formulated for goldfish. It contains a combination of vegetables, kelp, and shrimp that helps support immune system health and natural coloration.

Bottom feeders are an excellent addition to any freshwater aquarium with gold fish. They can provide additional variety and activity to the fish tank while helping to supplement your goldfish’s diet with leftovers from their meals.

Water Parameter for Your Goldfish

Fish Tank Ph Level

The low ph for goldfish is around 6.8-7, and a high ph level should be around 8.2, but it is essential to remember that wild goldfish are accustomed to a wide range of ph levels.

Tank Water Temperature

The ideal temperatures for goldfish are between 65 and 75 degrees Fahrenheit (18-24 Celsius). This should be closely monitored so that any sudden temperature changes are avoided.

Ammonia and Nitrite Levels

Ammonia and nitrite levels should be kept as close to 0 as possible. If the levels get too high, it can cause stress for your goldfish and even cause death if not treated quickly.

Water Hardness

Goldfish prefer water on the softer side and can tolerate a range of 4-18 dH.

Common Goldfish Temperature Degrees Celsius

The ideal goldfish tank temperature Celsius is between 18-24 Celsius ( or 65 to 75 Fahrenheit). Overall, goldfish are relatively easy to care for and make great additions to any freshwater aquarium.

They can thrive for years if you provide them with the necessary environment and a balanced diet.

Goldfish Temperature Shock Symptoms

If your goldfish is experiencing temperature shock, there are several potential symptoms to watch for. These include: sitting at the bottom of the tank, rapid breathing, lethargy or aimless floating, and excess slimness.

If you notice any of these signs in your fish, we recommend that you take immediate action to reduce the stress from sudden temperature changes as soon as possible.

Additionally, if your fish does not show any apparent signs of stress but has been exposed to a dramatic change in temperature, it should still be closely monitored.

Housing Requirements for Goldfish: What Do Goldfish Like in Their Tank?

Goldfish can live in various fish tank sizes and shapes as long as they have enough swimming space. The minimum size recommended for a goldfish tank is 20 gallons, but larger tanks are preferable.

Goldfish also require good water quality and regular tank maintenance to stay healthy. A filter system is necessary, along with weekly partial water changes. To maintain water quality, 

Additionally, it’s best to provide them with plenty of hiding places by adding live plants and decorations. Fancy goldfish also need plenty of room to swim freely, so make sure not to overcrowd your adult fish tank or have swim bladder disease.

Are Dogfish Bottom Feeders

Yes, Smooth dogfish are bottom feeders. These fish typically eat worms and small crustaceans, which they find near the sea floor.

They have a pair of barbels on their chin which help them feel for food in the dark. These fish are not aggressive, so they move slowly along the ocean floor, searching for food.

Though they are not the most common type of fish, they are an essential part of the marine food chain and should be respected.


Are goldfish top feeders?

Are goldfish top or bottom feeders? No, goldfish are bottom feeders! They nibble algae and sift gravel, rarely venturing to the water’s surface for food. Avoid floating pellets, as they may gulp air and flip upside down.

Do goldfish eat off the bottom?

Yes, goldfish do eat off the bottom! They’re omnivores and scavenge for algae, leftover food, and even tiny critters on the substrate. While they can eat at the surface, they spend much of their time sifting through the gravel at the bottom like little vacuum cleaners.

What bottom feeders can live with goldfish?

Bottom feeders that can live with goldfish: Choose peaceful orange bottom feeder fish with goldfish like Dojo Loaches, Bristlenose Plecos, or White Cloud Mountain Minnows. Avoid nippy fish, fin-eaters, or goldfish-snacks like Corydoras! Ensure your tank is big enough for all to thrive.

Are goldfish scavengers?

Yes, goldfish are scavengers. They eat a variety of foods, including algae, insects, and decaying plant matter.

Why do fish eat rocks and spit them out?

Why do goldfish eat rocks and spit them out? They don’t actually eat rocks. your confused goldfish might accidentally ingest small pebbles while scavenging for food on the bottom. They spit them out because rocks are indigestible and can cause digestive problems.

Why goldfish stay at bottom of tank?

Goldfish often stay at the bottom of the tank because they are looking for food. They are bottom feeders and naturally seek out food particles that settle to the bottom.

Can minnows live with goldfish?

Minnows can live with goldfish, but it’s important to choose compatible species. Some minnows are too small and may be eaten by goldfish. Research specific minnow varieties for compatibility.

Can goldfish and pleco live together?

Yes, goldfish and plecos can generally live together peacefully. Plecos are bottom feeders and won’t compete with goldfish for food. Just ensure the tank is large enough for both species.

How many goldfish in a 10 gallon tank?

A 10-gallon tank is too small for goldfish. Goldfish grow large and need ample space. It’s best to have at least a 20-gallon tank for one goldfish, or larger for multiple.

Can sucker fish live with goldfish?

Yes, sucker fish can live with goldfish, as long as they are the right size and species. Sucker fish are bottom feeders and won’t compete for food. However, some sucker fish species can grow very large.

Why do goldfish stay at the bottom of the tank?

Gold fish at the bottom of the tank because they are bottom feeders. They naturally seek out food particles that settle to the bottom. Additionally, they may be seeking cooler water temperatures, as the bottom of the tank is usually cooler.

Can bottom feeders live with goldfish?

Yes, bottom feeders can often live with goldfish. They typically don’t compete for food as they eat scraps and algae at the bottom of the tank. However, ensure the tank is large enough and the bottom feeders are compatible with goldfish in size and temperament.

Why is my goldfish eating rocks?

Goldfish may eat rocks due to various reasons such as nutritional deficiencies, curiosity, or mistaken identity. Consult a veterinarian to rule out any health issues and provide appropriate diet and environmental enrichment.

Can goldfish live with catfish?

Yes, goldfish can live with catfish, but it’s important to choose compatible species. Some catfish can be aggressive or grow too large for a goldfish tank. Research specific catfish varieties for compatibility.

Can Chinese algae eaters live with goldfish?

While Chinese Algae Eaters can live with goldfish, it’s not recommended. They are known to become aggressive and can outcompete goldfish for food. Consider other algae-eating options like Otocinclus catfish.


So, are goldfish bottom feeders? Yes! They get most of their food from foraging and scavenging at the bottom of their tanks. Now that you know a little more about goldfish and their feeding habits, you can ensure they have the best possible diet by offering them nutrient-rich foods like pellets or granules explicitly designed for bottom feeder goldfish. You can also supplement their diet with live or frozen and live foods such as brine shrimp, bloodworms, or daphnia. And remember, if you plan to keep other fish as tank mates for your goldfish, choose species that are compatible in size and temperament and that will keep them from competing for food. Keep reading the entire article about “are goldfish bottom dwellers”

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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