14 Types Of Blue Fish (With Pictures)



Blue Aquarium Fish for Freshwater Tanks



1. Blue Betta

Blue Betta
Blue Betta

It is believed that the Blue Betta Fish is a labyrinth-like species, which refers to the unique organ of its respiratory system, which lets it breathe air on the surface of the water. This Blue Betta Fish lacks the finnage and dazzling coloration like other Bettas.

They typically eat small, meaty animals like bloodworms, daphnias, worms, brine shrimps, mosquito larvae, and various Fish. Bettas tend to be minor, between 2.4 up to 3.1 inches in length, and can live for around two years, on average. If you plan to keep only one species, a 3-gallon tank will suffice.



2. Blue Peacock Cichlid

Blue Peacock Cichlid
Blue Peacock Cichlid

It is known as the Blue Peacock Cichlid; Aulonocara Nyassae is found on Lake Malawi, Africa’s sandy shores and rocky beaches. Males are bright blue to metallic yellow, and females have a dull gray or brown hue.

Peacock Cichlids are omnivores, meaning that they consume meat and vegetables, and plants. Peacock Cichlids can weigh up to 29 pounds. A blue peacock cichlid could be around 10-12 years if provided with the correct tank environment and diet.



3. Lake Kutubu Rainbowfish

Lake Kutubu Rainbowfish
Lake Kutubu Rainbowfish

It is believed that the Lake Kutubu Rainbowfish (Melanotaenia lacustris) is an aquatic species belonging to the family of Melanotaeniidae. They are typically cobalt blue-to-teal on top but change from green to silver or yellow at their bottom.

Lake Kutubu Rainbowfish are omnivores and consume small crustaceans, larvae of insects, as well as algae. An Average adult Lake Kutubu Rainbowfish sizes 4 to 4.8 inches. They attend schools in Papua New Guyana’s Lake Kutubu and the connected River Soro.



4. Blue Delta Guppy

Blue Delta Guppy
Blue Delta Guppy

The Blue Delta Guppy is also known as The Millions Fish and, sometimes, simply the Guppy. The Blue Delta Guppy is a popular fish in the sport of fishing. The species is indigenous in Central as well as South America.

They are light blue in their delta and Smooth blue coloring in both the dorsal and tail. Guppy Guppy is an all-animal fish and needs algae-based as well as meaty meals. They are tiny generally, about 2.5 inches.



5. Blue Gourami

Blue Gourami
Blue Gourami

Blue gouramis are amongst the most challenging aquarium fish that you can buy. The species is found naturally across southeast Asia. Blue Gourami, typically white, is a natural variation, and blue Gourami can thrive with balanced algae-based dry pellets or flakes.

The typical size of blue Gourami is five to 6-inches for adults. They can be found in swamps, marshes, peatlands, and flowing canals and streams.

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Blue Fish to be used in Saltwater Aquariums



6. Royal Blue Tang

Royal Blue Tang
Royal Blue Tang

With its regal appearance, the blue tang is among the most common and well-known marine aquarium fish across the globe. Blue tangs are located in the western part of the Atlantic Ocean from New York and Bermuda to the south of the Gulf of Mexico, south to Brazil.

They are found in a vast area throughout the Pacific and Indian oceans. They can be identified by their bright blue color oval bodies and flag-shaped tails in yellow. They eat small amounts of food such as sea algae, brine shrimps, as well as bits of seaweed, and other microorganisms that are small in size.



7. Yellowtail Blue Damselfish

Yellowtail Blue Damselfish

Chrysiptera para soma is a prevalent saltwater fish, also known as yellowtail damselfish blue damsel, goldtail demoiselle, and various other names. The yellowtail damsel can be described as a small fish, about three inches in length, with a vivid blue body and the yellow tail-fish.

Yellowtail damsels like to eat anything from tiny crustaceans to green algae. The size at which yellowtail damsels grow can be up to 3 inches (7.6 centimeters) in length. It is believed that the Yellowtail Blue Damselfish are Omnivores. In the wild, they consume zooplankton, and they also consume planktonic Fish and algae.



8. Cherub Pygmy Angelfish

 Cherub Pygmy Angelfish
Cherub Pygmy Angelfish

It is known as the Cherubfish, or Pygmy Angelfish has the usual shape of petite angels. It has an oval-shaped, small body with round fins. Pygmy Angelfish, scientifically known as Centropyge Argriare, belongs to a vast ocean area, spanning to the Gulf of Mexico and the Western Atlantic, and along with the Bahamas.

It’s a stunning blue-sapphire with orange highlights on its face. They thrive on eating frozen food that contains the marine Spirulina algae Mysid shrimp and shaved shrimp, and other tiny algae. Pygmy Angelfish are aggressive creatures that will fight other species and one another. Pygmy Angelfish are feisty animals who will fight with different species and with each other.



9. Asfur Angelfish.

Asfur Angelfish.
Asfur Angelfish.

The Asfur Angelfish is also known as Arabian Angelfish, or Crescent Angelfish Originating from the Red Sea, but also located throughout the Indo-Pacific. This is a tough angel known towel for Angelfish Pomacanthus as fur mainly feeds on sponges and tunicates.

The approximate size of the Fish can vary from one specimen to the next. It is known as the Asfur Angelfish is found in the Western Indian Ocean, including the Red Sea.



10. Neon Blue Goby

Neon Blue Goby
Neon Blue Goby

Blue Neon Goby is also called Dwarf Neon Goby. They can be found in Asian waters. Neon Blue Goby might look like the appearance of a Dwarf snakehead, but its dorsal fins of the animal are distinct.

Neon Blue Goby needs to be fed various fresh and frozen brine shrimp. The Fish can live for around two years within the natural. Geographical area: The Neon Goby is found in the western part of the Central Atlantic.

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Other blue fishes


11. Dwarf Gourami

 Dwarf Gourami
Dwarf Gourami

The dwarf Gourami is a tranquil and timid fish, and its variety of colors lets you transform your tank into an attractive aquatic forest. Dwarf gouramis are found in Pakistan, India, and Bangladesh.

It is an omnivore that likes algae-based food sources and meaty food items. The typical size of dwarf Gourami can vary between 3.5 inches and 4.5 inches. Dwarf Gourami originates from slow large rivers that run through Bangladesh, Pakistan, India, and other areas.



12. Electric Blue Crayfish

Electric Blue Crayfish
Electric Blue Crayfish

It is believed that the Electric Blue Crayfish hails from Florida, particularly that east from St. Johns River, numerous locations between Levy and Marion Counties. This Electric Blue Crayfish can be described as an omnivore and scavenger and devour almost all meaty or plant-based food. Electric Blue Crayfish are four to six inches in length.



13. Blue Discus

Blue Discus
Blue Discus

Blue discus is a well-known freshwater fish belonging to the cichlid species. Blue discus fish are known for their solid body color that ranges from yellow-brown to greenish-blue with dorsal and anal fins. They are also fed bloodworms, blackworms, and white worms and, are all considered to be among the best food sources.

They can grow up to 10 inches (25 centimeters). They are often found in clean, clear water. They can also be found in tiny Blackwater rivers and lakes, deep pools, shallow streams, and creeks.



14. Blue Shrimp

Blue Shrimp
Blue Shrimp

Shrimp swim as crustaceans sporting broad, muscular abdomens with narrow, narrow sides and long antennae. Shrimp are tiny shellfish with long legs and an extremely long body with a rigid casing. They also consume algae, living and dead plant matter, worms, snails, Fish, and some dead shrimps as they develop.

Shrimp vary in size, ranging from a few millimeters to over 20 centimeters. Shrimp are found in oceans, rivers, and lakes.

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