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Do goldfish get depressed?

Author

Emily Sparks

Published Jan 18, 2026

“One of the things we're finding that fish are naturally curious and seek novel things out,” said Dr. Braithwaite. In other words, your goldfish is probably bored. To help ward off depression, she urges introducing new objects to the tank or switching up the location of items.

How can you tell if a goldfish is depressed?

Using the "novel tank test," Dr. Pittman determines the level of depression a fish is experiencing by how long they hang at the bottom of a new tank. But, if the fish swims up top and explores its new environment, then it's apparently happy as a clam.

Do goldfish get depressed or lonely?

While we can never know for sure, there is no indication that goldfish get lonely. It's likely that when you spot a single goldfish that seems lethargic or depressed, it is far more likely that there is a problem with its environment or health than it is that the goldfish is lonely.

How can I cheer up my goldfish?

Make the tank interesting

Goldfish spend lots of time exploring their tanks to entertain themselves, so set up your tank in such a way as to provide lots of stimulus for your fish. Gravel, plants, ornaments and airflows can all make life interesting for your fish.

Is my goldfish bored?

The bottom line is that as long as you provide your goldfish with a large space, good clean water, and lots of plants and tank decorations, it should be perfectly happy. To reiterate, no, goldfish do not get bored or lonely, which is a definite benefit.

27 related questions found

Do goldfish like dark or light?

Goldfish aquariums do need light. But just as importantly, they also need dark. Goldfish, like all living things, live according to daily cycles. In the wild, they eat at certain times during the day and sleep when it's dark.

Do fish recognize their owners?

Surprisingly, science has found that fish are capable of recognizing their owner's face, even if the owner is standing by the tank with other people. Fish can develop an association between something they like, being fed, with the person who feeds them.

What does a happy goldfish look like?

Signs of a Happy Goldfish

Your goldfish should be swimming constantly and not floating, bobbing or sinking. They should eat regularly and eliminate their waste frequently. Provide some variety in your fish's diet. Pellets everyday can become boring.

Do goldfish recognize you?

Pet goldfish can distinguish between humans, and often recognise the human that regularly feeds them. Pet goldfish can also seem quite scared of new people, but become more comfortable with their owners over time as they realise they aren't a threat.

Are goldfish the happiest animal?

Effects. Ted once told Sam that a goldfish was the happiest animal in the world, because it had a ten-second memory. He then encouraged the player to "be a goldfish".

Do goldfish feel emotions?

Fish Have Feelings, Too: The Inner Lives Of Our 'Underwater Cousins' : The Salt Jonathan Balcombe, author of What A Fish Knows, says that fish have a conscious awareness — or "sentience" — that allows them to experience pain, recognize individual humans and have memory.

Why does my goldfish look sad?

Fish can feel depressed when their environments are too boring or they don't have any fish friends to swim with.

Is it cruel to keep a goldfish alone?

Goldfish are just not the same as humans – they're not social animals in the same way that we are, and they don't have the same capacity to get bored or long for companionship. In fact, many of the longest living goldfish have been kept alone, with no obvious harm to their well being.

How can u tell if a fish is happy?

Generally speaking, following are some of the ways you can tell if your fish are happy.

  1. They swim back and forth freely and energetically around the tank.
  2. Quite like humans, happy fish might have a vibrant glow to their skin. ...
  3. They do not appear fearful of the other fish in the tank. ...
  4. They are breathing normally.

Do goldfish turn black when sad?

Seeing these beautiful fish darken over time can be sad at first. But many times it's just a natural occurrence. Assuming they're healthy, learn to appreciate this interesting change in color. It's all part of the fun!

Do goldfish love their owners?

Goldfish are not as smart as other pets like cats or dogs, but they can easily tell that the people they live with love them. Usually goldfish swim up to meet you because they think you are going to feed them. They know they depend on you and love you back.

Is it OK to touch a goldfish?

Make sure you feed your goldfish every day. Make sure you never touch your fish. You can damage the slime coat they have to protect themselves from infection.

Is it OK to feed goldfish once a day?

Until they are one year old, you should feed goldfish 2 or 3 times per day. Once they are older than one year, you should feed goldfish just once per day. There are, however, a number of factors that could lead you to adjust this schedule. Also, the type and amount of goldfish food you feed your goldfish is important.

Are my goldfish fighting or playing?

In the wild, goldfish will fight when their territory is threatened or when they feel like they need to protect their young. In the home, fighting is usually caused by overcrowding. The fish might be playing and bumping into each other in the bowl, or they could be competing for food.

Are goldfish smart?

Goldfish can do tricks.

Goldfish are so smart that you can actually train them to do tricks. Using food as positive reinforcement, you can teach goldfish to do things like pushing a ball through a hoop or going through an obstacle course. There are other things you can teach them too!

How do goldfish sleep?

Unlike people, goldfish do not lie down when they sleep. Rather, they become less active, staying in one place and moving slowly to keep themselves stable. They look like they are hovering in the tank or pond, usually low in the water, an inch or so off the bottom, with their heads pointed slightly downward.

Can a fish love you?

We all know love is the strongest emotion and can cause use it to do good and bad things. Well, if fish have emotions then they must feel love. Love for their tank mates, love for their companions and possible love for their owners.

Do fish like to be petted?

"It is a basic characteristic of animal behavior that animals will approach desirable things and retreat from undesirable ones," he said, adding that the fish "appears to like the touch because s/he swims back to the hand repeatedly."

Do fish get happy when they see you?

They quickly learn to recognize their human companions, they know when feeding time is, and they get excited when you approach their aquarium.

Do goldfish need toys?

They want to be entertained with some toys and decor items present in the water. Usually, they look for aquatic plants, tunnels, stones, and other such things that give them an ocean vibe. Make sure to choose lightweight, easy to push around and aquarium safe toys, so it does not harm your goldfish.