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What fish are most affectionate?

What fish are most affectionate?

When it comes to choosing a pet fish, many aquarium hobbyists want one that will interact with them and show some personality. While fish may not be as cuddly as dogs or cats, some species are more likely than others to exhibit interesting behaviors and appear responsive when their owners approach the tank. Determining what fish are the most affectionate comes down to understanding their innate natures and intelligence levels. With proper care and handling, the fish that make the best pets are ones that seem to enjoy human company and enthusiastically approach the front of the tank when people are nearby.


Oscars are a popular freshwater fish known for being quite intelligent and interactive for a fish. Their scientific name is Astronotus ocellatus, and they are a type of cichlid native to South America. Oscars grow up to 12 inches long and have an attractive pattern of red, orange, black and white markings.

Many aquarists describe Oscars as dog-like in their behavior because they quickly learn to recognize their owners and will swim up to the glass when they approach. Oscars enjoy interacting and can be trained to do simple tricks like swimming through hoops for food. They are an affectionate fish that bond strongly with their owners.


Discus are another social freshwater fish that can be quite friendly and interactive with humans. Their scientific name is Symphysodon discus, and they are another cichlid species found in the Amazon River basin in South America. Discus get their name from their distinct disc-like body shape.

Discus fish come in a beautiful array of colors like red, blue, brown and green. They tend to be on the shy side initially but once they acclimate to their home and owners, discus really shine. They are known for gracefully swimming up to the tank front when people enter the room. Given their attentive and responsive nature, discus are a very endearing fish.


From the Anabantidae family of labyrinth fish, gouramis are an enjoyable interactive fish with plenty of personality. There are many color varieties like blue, gold, and pearl to choose from. Dwarf gourami stay under 3 inches while larger species can grow up to 6 inches long.

Gouramis are anabantids, which means they can actually breathe oxygen from the air using a special lung-like labyrinth organ. This allows them to survive in low oxygen conditions that would kill other fish. Gouramis tend to boldly investigate anything new in their tank. They also quickly start recognizing their owners and beg for food when they approach the aquarium.


Mollies are a classic beginner fish that have been popular in home aquariums for decades. They come in many different tail and color types like black, gold, and Dalmatian. Mollies stay on the smaller side, reaching a maximum length of 3-4 inches.

This livebearing fish is cheerful and active, lighting up whenever humans pay attention to them. Mollies love to eat and will gather at the front of the tank when it’s feeding time. With their lively attitudes and lack of shyness, mollies are fun to watch and quite endearing as pet fish go. They do well in community tanks with peaceful tank mates.


Closely related to mollies, platies are another vivacious livebearing fish that thrives in community tanks. Like mollies, they come in many bright colors and patterns including red, yellow, blue, and mickey mouse. Platies max out around 2-3 inches in length.

Platies are very social and actively swim around together. They stay mid-level in the tank and eagerly greet humans looking in. Platies reproduce easily, so they’re commonly acquired as feeder fish for larger aggressive species. But their sprightly personalities also make them rewarding aquarium pets too. They’re bold enough to interact with owners.


No list of personable fish would be complete without the betta. Also known as Siamese fighting fish, bettas are beloved for their long flowing fins and vibrant colors. Selectively bred for aggression, male bettas will flair their gills and fins at each other if housed in close quarters. So they do best in a species-only tank.

But despite their solitary nature, bettas bond strongly with their human caretakers. They’re extremely curious fish who will follow fingers, flare at themselves in the mirror, and get excited when their owner comes near. With the right tank setup, food, and handling, bettas become responsive pets that clearly recognize their owners. Their intelligence and companionable qualities make them the quintessential interactive fish.


While pufferfish aren’t generally recommended for beginners, their individualistic behaviors make them fun to keep for experienced aquarists. Most puffers only reach 3-5 inches long, but some species can grow larger. They inflate themselves with water and air when threatened as a defense mechanism.

Puffers are intelligent and interactive, quickly learning to accept foods like bloodworms and snails from their owners hand or tweezers. They explore their environment and watch humans attentively from the front of the tank. Though puffers can be a bit moody and require pristine water conditions, their cute faces and inquisitive personalities make them delightfully amusing pets.

Corydoras Catfish

Commonly known as cory cats, these small bottom dwelling fish grow 1-3 inches long depending on species. They’re social fish that should be kept in a school of 6 or more. Cories come in many types like peppered, albino, and juli.

While catfish aren’t known for being interactive, cory cats are unusually personable and friendly compared to other tank bottom feeders. They actively swim up to greet their owners and are quite fearless during feeding time. Cory cats are endearing to watch as they busily scavenge together and interact peacefully with other fish. Their durability and playful qualities make them a popular community fish.


Though they’re often dismissed as beginner “starter” fish, goldfish can actually display amusing behaviors and personalities when housed properly with adequate space. Common goldfish reach 10-12 inches, so they need at least 40-50 gallon tanks. Fancy goldfish like Orandas stay a bit smaller around 8 inches.

Goldfish aren’t shy about begging for food and will quickly associate their owners with feeding time. They learn to follow fingers and come up to the glass in anticipation of hand feeding. Goldfish also interact with novelty tank items like decorations and bubble walls. Their hardiness, size, and personality quirks make goldfish underratedly enjoyable aquarium pets.


Guppies are a classic staple fish for community tanks, prized for their endless variety of colors and patterns. Ranging 1-2 inches in length, their peaceful temperaments let them thrive alongside other small tropical fish. Male guppies in particular have vibrant hues and big showy tails to attract females.

These lively fish actively school together and aren’t timid when humans approach. Guppies will eagerly congregate at the feeding area in anticipation of food. Their active habits and lack of shyness make them fun to interact with. Guppies breed prolifically, so they’re easy to obtain. Overall, their vibrant hues and responsive behaviors make guppies engaging pet fish.

Ranking of Most Affectionate Fish

Rank Fish
1 Betta
2 Oscar
3 Discus
4 Gourami
5 Molly
6 Platy
7 Pufferfish
8 Cory Catfish
9 Goldfish
10 Guppy


When it comes to fish that interact and form bonds with their human caretakers, bettas top the list as the most affectionate aquarium fish. Their intelligence, personality, and recognition of owners can’t be beat. Oscars and discus also become strongly attached and display enjoyable behaviors like trick training.

Other personable species include gouramis, mollies, platies, puffers, cory cats, goldfish, and guppies. With their varying life spans and tank needs, there’s an interactive fish suited for just about any aquarist. Proper tank size, enrichment, and handling goes a long way towards forming a real pet-owner relationship. While fish aren’t cuddly, the right species will show they enjoy your company.