Fish Starting With U [Full List]

From the Uaru to the Unicorn Fish, these fish are sure to captivate and intrigue anyone who is interested in the world beneath the waves.

In this article, we will explore some of the most intriguing and unique fish that start with the letter U. So grab your diving gear, and let’s explore the depths together!

Fish Starting With U

Uaru

Uaru is a popular fish among the freshwater fish keepers. Its scientific name is Uaru Fernandezyepezi, and it belongs to the Cichlid family. Uaru is native to South America, where it inhabits the Amazon River basin. The Uaru has a distinctive body shape, which is round and flat with a slightly arched back. The Uaru’s body is silver-gray, and it has a black patch on its forehead that extends to its back. The Uaru is a peaceful fish that can grow up to 12 inches in length. It feeds on a variety of food, including insects, crustaceans, and plants. Uaru is a popular fish for aquariums due to its unique appearance and peaceful nature.

Uaru Fernandezyepezi

Uaru Fernandezyepezi is a freshwater fish that belongs to the Cichlid family. This species is native to South America, where it can be found in the Amazon River basin. Uaru Fernandezyepezi has a unique body shape, which is flat and round with a slightly arched back. Its body is silver-gray in color, and it has a black patch on its forehead that extends to its back. Uaru Fernandezyepezi can grow up to 12 inches in length and is a peaceful fish. It is an omnivore that feeds on insects, crustaceans, and plants. Uaru Fernandezyepezi is a popular fish for aquariums due to its unique appearance and peaceful nature.

Uegitglanis Zammaranoi

Uegitglanis Zammaranoi is a freshwater fish that belongs to the family Claroteidae. It is native to Africa, where it can be found in the Congo River basin. Uegitglanis Zammaranoi has a unique body shape, which is elongated and cylindrical. Its body is dark brown in color, and it has small eyes and a large mouth. Uegitglanis Zammaranoi can grow up to 14 inches in length and is an omnivore that feeds on insects, crustaceans, and fish. This fish is not commonly kept in aquariums due to its large size and predatory nature.

Umbrella Cichlid

Umbrella Cichlid is a freshwater fish that belongs to the Cichlid family. Its scientific name is Mesonauta egregius. It is native to South America, where it can be found in the Amazon River basin. The Umbrella Cichlid has a unique body shape, which is oval and flat with a slightly arched back. Its body is silver in color with black stripes and spots. The Umbrella Cichlid can grow up to 6 inches in length and is a peaceful fish. It is an omnivore that feeds on insects, crustaceans, and plants. The Umbrella Cichlid is a popular fish for aquariums due to its unique appearance and peaceful nature.

Umbrella Conger

Umbrella Conger is a saltwater fish that belongs to the Congridae family. Its scientific name is Conger eelichthys umbellatus. It is native to the Indo-Pacific region, where it can be found in the shallow waters near coral reefs. The Umbrella Conger has a unique body shape, which is elongated and cylindrical. Its body is brown in color, and it has small eyes and a large mouth. The Umbrella Conger can grow up to 20 inches in length and is a predatory fish. It feeds on a variety of food, including fish, crustaceans, and cephalopods. The Umbrella Conger is not commonly kept in aquariums due to its large size and predatory nature.

Umpqua Chub

Umpqua Chub is a freshwater fish that belongs to the Cyprinidae family. Its scientific name is Oregonichthys kalawatseti. It is native to the Umpqua River basin in Oregon, United States. The Umpqua Chub has a unique body shape, which is elongated and cylindrical. Its body is brownish-green in color, and it has a large head with a protruding lower jaw. The Umpqua Chub can grow up to 6 inches in length and is an omnivore that feeds on insects, crustaceans, and algae. This fish is considered threatened due to habitat destruction and is protected by the US Endangered Species Act.

Underjaw Kingfish

Underjaw Kingfish is a saltwater fish that belongs to the Carangidae family. Its scientific name is Caranx papuensis. It is native to the Indo-Pacific region, where it can be found in the shallow waters near coral reefs. The Underjaw Kingfish has a unique body shape, which is elongated and slightly compressed. Its body is silver in color, and it has a prominent underbite. The Underjaw Kingfish can grow up to 18 inches in length and is a predatory fish that feeds on small fish and crustaceans. It is a popular game fish and is also caught for commercial purposes.

Undulate Painted Ray

Undulate Painted Ray is a saltwater fish that belongs to the Rajidae family. Its scientific name is Raja undulata. It is native to the eastern Atlantic Ocean, where it can be found from the Bay of Biscay to South Africa. The Undulate Painted Ray has a unique body shape, which is rhomboidal and flattened. Its body is brown in color with white spots, and it has a long tail with a barb. The Undulate Painted Ray can grow up to 30 inches in length and is a bottom-dwelling fish that feeds on crustaceans and small fish. It is not commonly kept in aquariums due to its large size and predatory nature.

Undulated Moray

Undulated Moray is a saltwater fish that belongs to the Muraenidae family. Its scientific name is Gymnothorax undulatus. It is native to the Indo-Pacific region, where it can be found in the shallow waters near coral reefs. The Undulated Moray has a unique body shape, which is elongated and cylindrical. Its body is brown in color with yellow spots, and it has a large mouth with sharp teeth. The Undulated Moray can grow up to 4 feet in length and is a predatory fish that feeds on small fish and crustaceans. It is not commonly kept in aquariums due to its large size and predatory nature.

Unicorn Crestfish

Unicorn Crestfish is a saltwater fish that belongs to the Lophotidae family. Its scientific name is Lophotus lacepede. It is native to the eastern Atlantic Ocean, where it can be found from the Bay of Biscay to South Africa. The Unicorn Crestfish has a unique body shape, which is elongated and cylindrical. Its body is brownish-green in color, and it has a long dorsal fin that resembles a unicorn horn. The Unicorn Crestfish can grow up to 12 inches in length and is a predatory fish that feeds on small fish and crustaceans. It is not commonly kept in aquariums due to its large size and predatory nature.

Unicorn Fish

Unicorn Fish is a saltwater fish that belongs to the Acanthuridae family. Its scientific name is Naso unicorn. It is native to the Indo-Pacific region, where it can be found in the shallow waters near coral reefs. The Unicorn Fish has a unique body shape, which is elongated and oval. Its body is blue-green in color with a yellow stripe running along its side, and it has a long protruding snout that resembles a unicorn horn. The Unicorn Fish can grow up to 2 feet in length and is an herbivore that feeds on algae and seaweed. It is a popular fish in the aquarium trade due to its striking appearance and peaceful nature.

Unicorn Leatherjacket

Unicorn Leatherjacket is a saltwater fish that belongs to the Monacanthidae family. Its scientific name is Aluterus monoceros. It is native to the Indo-Pacific region, where it can be found in the shallow waters near coral reefs. The Unicorn Leatherjacket has a unique body shape, which is elongated and oval. Its body is brown in color with a yellow stripe running along its side, and it has a long protruding snout that resembles a unicorn horn. The Unicorn Leatherjacket can grow up to 2 feet in length and is an omnivore that feeds on algae, crustaceans, and small fish. It is not commonly kept in aquariums due to its large size and territorial behavior.

Unicornfish

Unicornfish is a saltwater fish that belongs to the Acanthuridae family. Its scientific name is Naso hexacanthus. It is native to the Indo-Pacific region, where it can be found in the shallow waters near coral reefs. The Unicornfish has a unique body shape, which is elongated and oval. Its body is blue-green in color with a yellow stripe running along its side, and it has a long protruding snout that resembles a unicorn horn. The Unicornfish can grow up to 2 feet in length and is an herbivore that feeds on algae and seaweed. It is a popular fish in the aquarium trade due to its striking appearance and peaceful nature.

Upland Bully

Upland Bully is a freshwater fish that belongs to the Cyprinidae family. Its scientific name is Cottus bendirei. It is native to the western United States, where it can be found in cold, clear streams and rivers. The Upland Bully has a unique body shape, which is elongated and cylindrical. Its body is brownish-green in color with mottled markings, and it has a large head with a wide mouth. The Upland Bully can grow up to 6 inches in length and is an omnivore that feeds on insects, crustaceans, and algae. It is not commonly kept in aquariums due to its specialized habitat requirements.

Upper Zambezi Yellowfish

Upper Zambezi Yellowfish is a freshwater fish that belongs to the Cyprinidae family. Its scientific name is Barbus codringtonii. It is native to the Zambezi River basin in southern Africa, where it can be found in the shallow waters of the upper Zambezi River. The Upper Zambezi Yellowfish has a unique body shape, which is elongated and cylindrical. Its body is olive-green in color with a yellowish underbelly, and it has a large head with a protruding lower jaw. The Upper Zambezi Yellowfish can grow up to 2 feet in length and is an omnivore that feeds on insects, crustaceans, and small fish. It is a popular game fish and is also caught for commercial purposes.

Upside-down Catfish

Upside-down Catfish is a freshwater fish that belongs to the Mochokidae family. Its scientific name is Synodontis nigriventris. It is native to the rivers and streams of Central and West Africa, where it can be found in slow-moving or stagnant waters. The Upside-down Catfish has a unique body shape, which is flattened and elongated. Its body is brownish-gray in color with black markings, and it has a long dorsal fin that extends along its entire back. The Upside-down Catfish can grow up to 4 inches in length and is an omnivore that feeds on algae, small invertebrates, and fish. It gets its name from its unique behavior of swimming upside down, which is believed to help it search for food more effectively.

Urchin Clingfish

Urchin Clingfish is a saltwater fish that belongs to the Gobiesocidae family. Its scientific name is Diademichthys lineatus. It is native to the Pacific Ocean, where it can be found in shallow waters near rocky reefs and kelp beds. The Urchin Clingfish has a unique body shape, which is flattened and oval. Its body is brownish-gray in color with black markings, and it has a large head with a suction cup-like mouth that it uses to cling to rocks and other surfaces. The Urchin Clingfish can grow up to 4 inches in length and is an omnivore that feeds on small invertebrates and algae. It is not commonly kept in aquariums due to its specialized habitat requirements.

Urolophus Deforgesi

Urolophus Deforgesi is a saltwater fish that belongs to the Urolophidae family. Its scientific name is Urolophus deforgesi. It is native to the southern coast of Australia, where it can be found in shallow coastal waters and estuaries. The Urolophus Deforgesi has a unique body shape, which is flattened and disc-shaped. Its body is grayish-brown in color with darker markings, and it has a long tail that resembles a whip. The Urolophus Deforgesi can grow up to 2 feet in length and is an omnivore that feeds on small fish, crustaceans, and worms. It is not commonly kept in aquariums due to its specialized habitat requirements.

Urolophus Neocaledoniensis

Urolophus Neocaledoniensis is a saltwater fish that belongs to the Urolophidae family. Its scientific name is Urolophus neocaledoniensis. It is native to the western Pacific Ocean, where it can be found in shallow coastal waters and coral reefs. The Urolophus Neocaledoniensis has a unique body shape, which is flattened and disc-shaped. Its body is brownish-gray in color with darker markings, and it has a long tail that resembles a whip. The Urolophus Neocaledoniensis can grow up to 2 feet in length and is an omnivore that feeds on small fish, crustaceans, and worms. It is not commonly kept in aquariums due to its specialized habitat requirements.

Urolophus Papilio

Urolophus Papilio is a saltwater fish that belongs to the Urolophidae family. Its scientific name is Urolophus papilio. It is native to the southern coast of Australia, where it can be found in shallow coastal waters and estuaries. The Urolophus Papilio has a unique body shape, which is flattened and disc-shaped. Its body is grayish-brown in color with darker markings, and it has a long tail that resembles a whip. The Urolophus Papilio can grow up to 2 feet in length and is an omnivore that feeds on small fish, crustaceans, and worms. It is not commonly kept in aquariums due to its specialized habitat requirements.

Uromegarei

Uromegarei is a freshwater fish that belongs to the Apistogramma family. Its scientific name is Apistogramma agassizii. It is native to the Amazon Basin in South America, where it can be found in slow-moving or stagnant waters. The Uromegarei has a unique body shape, which is elongated and slightly flattened. Its body is orange-red in color with black markings, and it has a large dorsal fin that extends along its entire back. The Uromegarei can grow up to 3 inches in length and is an omnivore that feeds on small invertebrates and fish. It is a popular aquarium fish due to its striking appearance and relatively easy care requirements.

Ursinoscorpaenopsis Kitai

Ursinoscorpaenopsis Kitai is a saltwater fish that belongs to the Scorpaenidae family. Its scientific name is Ursinoscorpaenopsis kitai. It is native to the Pacific Ocean, where it can be found in rocky reefs and deep waters. The Ursinoscorpaenopsis Kitai has a unique body shape, which is elongated and slightly flattened. Its body is brownish-red in color with darker markings, and it has numerous spines on its dorsal fin and head. The Ursinoscorpaenopsis Kitai can grow up to 8 inches in length and is a carnivore that feeds on small fish and invertebrates. It is not commonly kept in aquariums due to its aggressive behavior and specialized habitat requirements.

Ussuri Sharpbelly

Ussuri Sharpbelly is a freshwater fish that belongs to the Cyprinidae family. Its scientific name is Hemiculter leucisculus. It is native to the Amur River Basin in Asia, where it can be found in slow-moving or stagnant waters. The Ussuri Sharpbelly has a unique body shape, which is elongated and slightly flattened. Its body is silver in color with black markings, and it has a forked tail. The Ussuri Sharpbelly can grow up to 10 inches in length and is an omnivore that feeds on small invertebrates and plant matter. It is not commonly kept in aquariums due to its specialized habitat requirements.

Utah Chub

Utah Chub is a freshwater fish that belongs to the Cyprinidae family. Its scientific name is Gila atraria. It is native to the western United States, where it can be found in slow-moving or stagnant waters. The Utah Chub has a unique body shape, which is elongated and slightly flattened. Its body is silver in color with black markings, and it has a forked tail. The Utah Chub can grow up to 6 inches in length and is an omnivore that feeds on small invertebrates and plant matter. It is not commonly kept in aquariums due to its specialized habitat requirements.

Utah Lake Sculpin

Utah Lake Sculpin is a freshwater fish that belongs to the Cottidae family. Its scientific name is Cottus echinatus. It is native to Utah Lake in the western United States, where it can be found in slow-moving or stagnant waters. The Utah Lake Sculpin has a unique body shape, which is elongated and slightly flattened. Its body is brown in color with mottled markings, and it has a large head with a wide mouth. The Utah Lake Sculpin can grow up to 6 inches in length and is a carnivore that feeds on small invertebrates and fish. It is not commonly kept in aquariums due to its specialized habitat requirements and limited distribution.

Utah Sucker

Utah Sucker is a freshwater fish that belongs to the Catostomidae family. Its scientific name is Catostomus ardens. It is native to the western United States, where it can be found in slow-moving or stagnant waters. The Utah Sucker has a unique body shape, which is elongated and slightly flattened. Its body is silver in color with a slightly rounded head, and it has a large mouth with fleshy lips. The Utah Sucker can grow up to 10 inches in length and is an omnivore that feeds on small invertebrates and plant matter. It is not commonly kept in aquariums due to its specialized habitat requirements.

Conclusion:

Fish that start with U are some of the most fascinating and unique creatures in the aquatic world. From the Uaru to the Unicorn Fish, each one has its own distinct personality, shape, and behavior.

Whether you are an avid fish enthusiast or just someone who appreciates the wonders of the natural world, these fish are sure to leave a lasting impression on you. So next time you take a dip in the ocean or visit an aquarium, keep an eye out for these incredible creatures that start with the letter U. Who knows what fascinating discoveries await!