Butterfly Fish

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Butterfly Fish

Butterfly Fish Scientific Classification

KingdomAnimaliaPhylumChordataClassActinopterygiiOrderPerciformesFamilyChaetodontidaeScientific NameChaetodontidae

Butterfly Fish Conservation Status

Butterfly Fish Locations

Butterfly Fish Locations

Butterfly Fish Facts

PreySmall invertebrates and plant matterMain PreyPlankton, Coral, CrustaceansGroup Behavior

  • Solitary/School

Fun FactThe butterfly fish has a black spot on its back, most likely to distract predators.Estimated Population SizeunknownBiggest ThreatDestruction of coral reefsMost Distinctive FeatureBright colorsDistinctive FeatureElongated nose and bright coloursOther Name(s)ButterflyfishGestation Period30 hoursWater Type

  • Salt

Optimum pH Level8.1 – 8.6HabitatCoral reefs, mudflats, seagrass beds and lagoonsPredatorsFish, Eels, SharksDietOmnivoreFavorite FoodPlanktonTypeRay-finned fishCommon NameButterfly fishNumber Of Species115Average Clutch Size200SloganThere are more than 100 different species!

Butterfly Fish Physical Characteristics


  • Yellow
  • Red
  • Blue
  • Black
  • White
  • Orange
  • Silver

Skin TypeScalesLifespan5-10 yearsWeight20-80gLengthUp to 12 inches

Butterfly Fish Images

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The butterfly fish is a family of tropical marine animals that have adapted to life in and around coral reefs. The seemingly endless permutations of beautiful colors and patterns give each species an entirely distinctive appearance, much like the famous insect for which it’s named. In fact, the vivid appearance and rather docile personality have made them a very popular type of aquarium fish.

4 Butterfly Fish Facts

  • This fish is most active during the day and sleeps at night in crevices and hiding spots.
  • This fish can change its colors automatically depending on the situation. The bright colors often fade during the nighttime to blend in with the coral reefs. But the colors become even brighter when the fish feels antagonized.
  • Most of these fish travel around in schools or pairs for feeding and protection, but some are highly territorial.
  • The butterfly fish relies on its sight to find prey and communicate with others. If two fish become separated, then one may swim upward to alert the other of its presence.

Butterfly Fish Classification and Scientific Name

The scientific name for the butterfly fish family is Chaetodontidae. This is a combination of two Ancient Greek words: chaite, meaning hair, and odontos, meaning tooth. This is probably a reference to the rows of brush-like teeth in the mouth. This family should not be confused with the freshwater butterflyfish (also known as the African butterflyfish). Endemic to the West African region, the freshwater butterflyfish belongs to an entirely different order. Given their different appearance, distribution, and behavior, they are not closely related at all. The freshwater buterflyfish is more closely related to other African fish in the order of Osteoglossiformes.

Butterfly Fish Species

This fish family contains about 115 species of fish, each with a unique pattern and color. There are 12 genera in total, but the one genus of Chaetodon contains some 90 species alone.

  • Foureye Butterfly Fish: Native to the Atlantic Ocean from Massachusetts to South America, this species has a very recognizable white and blue body with darker stripes emanating out from the center. The name probably derives from the very long and prominent black spot near the tail surrounded by a white ring.
  • Copperband Butterfly Fish: Endemic to the Pacific and Indian Oceans, this species has alternating stripes of white and orange around the body. It also has a particularly long snout.
  • Blacknosed Butterfly Fish: Also known as the barberfish, this East Pacific species (which congregates around the Galapagos Island) has a yellow body, a white face, and black markings around the upper fin and parts of the face.

Butterfly Fish Appearance

The butterfly fish sometimes looks like the wings of a butterfly. It has a big, round but flat body with prominent fins around the back and pelvis. The dorsal fin on the back sometimes features sharp spines which provide a defense against potential predators. As mentioned previously, this family is named for the small rows of bristle-like teeth in the mouth. Some have long snouts and jaws (up to 25% of the body length) for grasping prey in small crevices. The most common colors are blue, yellow, orange, and white with dark contrasting bands and large spots near the back. This spot may serve the purpose of confusing predators. The largest species of butterfly fish measures up to a foot long, but most don’t exceed more than 8 inches.

orange and white butterfly fish

Butterfly Fish Distribution, Population, and Habitat

The butterfly fish is one of the most common types of coral reef fish in the world. It is very well adapted to life in the narrow confines of vast coral reef systems, though a few species also inhabit seagrass beds, lagoons, and mudflats. The greatest concentration of species is found in a stretch of Pacific territory between Australia and Taiwan. Only four species occur in the Eastern Pacific and 13 in the Atlantic Ocean. Their preferred habitat is the shallow warm water less than 65 feet deep near shores or estuaries, but a few species reside in deep water habitats up to 650 feet.

The IUCN Red List has classified most species as least concern. This means the butterfly fish is in excellent health and requires no specific conservation efforts to survive. However, the butterfly fish is so well adapted to its habitat that the die-off of coral reefs from climate change may threaten many species.

Butterfly Fish Predators and Prey

The butterfly fish likes to hunt and sleep in a narrow range of territory around coral heads. These also provide it with protection.

What does the butterfly fish eat?

Feeding at the bottom layer of the sea, the butterfly fish has evolved all kinds of jaw sizes and shapes to probe narrow cracks for food. Its favorite foods include small invertebrates such as sponges and worms. Some species also feed on coral polyps, algae, and plankton.

What eats the butterfly fish?

The butterfly fish is preyed up by sharks, eels, snappers, and other large fish. If danger appears, then this creature has the ability to hide in small crevices around coral reefs. Many species have also evolved spines, armor, and toxins to deal with threats.

Butterfly Fish Reproduction and Lifespan

The butterfly fish mates at a very specific time of the year. In the tropics, the spawning season usually peaks in winter or early spring. In temperate climates, the spawning season takes place in the summer. The butterfly fish forms stable monogamous pairs for at least three years and sometimes their entire lives.

When a female is ready to mate, her abdomen becomes swollen with eggs. The male will come up from behind and gently nudge her abdomen with its snout. They will release the eggs and sperm together, creating a white cloud in the water. Some enterprising males without a mate may swim in and quickly add his sperm to the cloud.

Once fertilized, the eggs hatch in a mere 28 to 30 hours later. Parents likely play almost no role in raising and caring for the young, but in order to protect itself, the butterfly fish has a unique larval stage in which it develops a plate of bony armor over the head. This plate eventually extends outward along the back to form spines. These spines are eventually absorbed into the body.

After growing to about the size of a coin, the fish will soon enter into a juvenile stage and exhibit different color patterns from its adult form. It will usually find a temporary home within small tidal pools or shallow areas before moving out to the corals. After about a year, the butterfly fish can expect to begin breeding. It has a full life expectancy of five to 10 years in the wild.

Butterfly Fish in Fishing and Cooking

The butterfly fish is almost never caught for food, but it is popular in the exotic pet trade.

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