The Fish Guru

A Colorful Kaleidoscope of J Fish for Your Aquarium

A Kaleidoscope of Popular J Fish for Your Aquarium

Are you a seasoned fish keeper, or are you just starting as an aquarist? Either way, you’ll want to keep this list of popular fish that begin with the letter J in your back pocket.

We’ve compiled a comprehensive list of fish for you to explore and enjoy. From jelly-bean tetras to Japanese swordtails, we’ve got you covered.

Jack

The jack, also known as Pacific jack mackerel, is a predatory fish that’s found in the waters of the Pacific Ocean. These fast-swimming fish are excellent prey for larger fish and marine mammals such as dolphins and sea lions.

They can grow as long as two feet and live for up to six years.

Jaguar Catfish

The jaguar catfish is a unique and attractive species of catfish. It has a distinctive brown and black spotted pattern that resembles the fur of a jaguar.

This carnivorous fish is peaceful and thrives in tanks with soft substrates and plants.

Jawfish

Jawfish are a group of small, tropical, and exotic fish that make for good aquarium pets. They are friendly and active fish that require a stable water temperature and pH conditions.

They’re easy to care for and can adapt well to living in small tanks with other non-aggressive fish.

Jewelfish

The jewelfish, also known as the African cichlid, is a warm-water fish that thrives in aquariums. These territorial fish grow up to 12 inches in length and require a specific pH level and water hardness in their environment.

They are known to engage in aggressive territorial battles with other males in their group.

Japanese Flathead

If you’re looking for a rare delicacy fish to serve raw, look no further than Japanese flathead. This thick-scaled fish has a mild flavor and requires steel wool to remove its scales.

It’s a sought-after fish in Japanese cuisine.

Japanese Rubyfish

The Japanese rubyfish is a bottom-dwelling fish found in the West Pacific Ocean. They are deep water fish and can grow up to 5 inches long.

These fish have a world record for their lifespan which is still unknown because they die before they can reproduce in captivity.

Javelin

Javelin fish thrive in shallow depths and tropical climates. They are known for their distinctive flavor and are typically found in schools.

Javelin fish require a stable water temperature and pH levels to thrive in an aquarium.

Jewfish

The

Jewfish, also known as the Goliath Grouper, is a saltwater fish that grows up to 8 feet long and can weigh up to 600 pounds. These bony fish are popular among commercial fishermen and require conservation efforts since they are at risk of overfishing and habitat loss.

Javan Flounder

The

Javan Flounder is a flatfish native to the West Pacific Ocean. They are not popular in the aquarium trade, but they have an interesting life cycle.

As juveniles, they have an eye on each side of their head, but as they mature, one of their eyes migrates to the other side so they can lay on the sea floor and look up for predators.

Japanese Lanternfish

Japanese lanternfishes are deep-water fish found in shallow waters. They are bioluminescent and glow in the dark.

They are low on the food chain and are significant because they are a food source for larger fish. Additional Fish For Your Consideration:

Jensen’s Skate

Jensen’s skate is a thornback skate that’s found in the southern hemisphere.

They have a unique body shape and are expert bottom dwellers. They are rarely seen in the aquarium trade.

Japanese Sillago

The

Japanese Sillago, also known as the sand whiting, is known for its high commercial value. It’s a slender fish that grows up to 30 cm long and is highly valued in the Tokyo seafood market.

Japanese Bigeye

The

Japanese Bigeye is a tuna species that has high commercial value. This fish is commonly found in the waters of the Western Pacific and has a long lifespan of about 15 years.

Janss’ Pipefish

Janss’ pipefish is known for their elongated bodies and tropical waters. These small fish thrive in peaceful environments and require a stable temperature to survive.

Japanese Rice Fish

Japanese rice fish is a freshwater fish that adapts well to aquarium life. They are popular in aquaria due to their hardiness and adaptability.

Japanese Beardfish

The Japanese beardfish is a deep-sea fish that has commercial value. They are commonly used as an ingredient in Japanese cuisine.

Jellybean Tetra

Jellybean tetras are small freshwater fish that add a pop of color to community tanks. They school well and are peaceful fish.

Jenny Mojarra

Jenny Mojarra is a freshwater fish that’s known for its carnivorous diet and ability to consume algae. They are good at consuming waste and keep the aquarium environment clean.

Japanese Perchlet

Japanese Perchlet is a reef fish that loves to school and thrives in a nocturnal environment.

Japanese Armorhead

The

Japanese Armorhead is a deep-sea fish that has high commercial value. It’s commonly found in the waters of the Pacific Ocean.

Japanese Topeshark

The

Japanese Topeshark is a rare species of nocturnal shark that is found in the waters surrounding Japan.

Javanese Ricefish

Javanese ricefish are peaceful and adaptable freshwater fish. They are small in size and ideal for small aquariums.

John Dory

John Dory is an ocean fish that’s popular in fine dining restaurants. With its unique appearance, it’s unforgettable to those who eat it.

Jerdon’s Barb

Jerdon’s Barb is a freshwater fish that’s endemic to India. They are known to be peaceful and thrive in community tanks.

Japanese Flyingfish

Japanese flyingfish is a migratory saltwater fish that’s popular in Japan. They are prized for their unique ability to “fly” above the water.

Japanese

Jawfish

Japanese

Jawfish is a saltwater fish that likes to dwell at the bottom of tanks. They are excellent at digging and have a unique appearance.

Java Stingaree

Java Stingaree is a venomous ray species that is threatened. They are native to the waters of Indonesia and are sensitive to habitat loss.

Jenynsia Diphyes

Jenynsia Diphyes is a freshwater fish that thrives in schools. They are peaceful and easy to care for.

Japanese Gissu

Japanese Gissu is a hardy freshwater fish that’s popular among aquarists. They adapt well to a range of water temperatures and pH levels.

Jae Barb

Jae Barb is a colorful and peaceful freshwater fish that loves to shoal. They are ideal for community tanks.

Jenyns’ Sprat

Jenyns’ Sprat is a schooling saltwater fish that’s commonly used as forage fish in commercial fisheries.

Jenynsia Eirmostigma

Jenynsia Eirmostigma is a freshwater fish that’s peaceful and thrives in schools.

Japanese Gizzard Shad

Japanese Gizzard Shad is a saltwater fish that’s in high demand for its oily flesh and commercial value.

Jamaican Killifish

Jamaican Killifish are colorful freshwater fish that are endangered. They are only found in Jamaica.

Jamaica Weakfish

Jamaica weakfish is a saltwater fish that’s a popular game fish in sport fishing.

Japanese Meagre

Japanese Meagre is a saltwater fish that is highly prized for its flavor. It’s typically found in the waters of the Mediterranean Sea.

Japanese Halfbeak

Japanese Halfbeak is a saltwater fish that has a unique appearance. They are popular in aquaria due to their distinctive appearance.

Jenynsia Alternimaculata

Jenynsia Alternimaculata is a freshwater fish that likes to school and thrives in peaceful environments.

Jenynsia Sanctaecatarinae

Jenynsia Sanctaecatarinae is an endangered freshwater fish that’s endemic to Brazil.

Jenynsia Tucumana

Jenynsia Tucumana is a colorful and peaceful freshwater fish that loves to shoal.

Jackson’s Barb

Jackson’s Barb is a colorful and active freshwater fish that loves to swim. They make a great addition to community tanks.

Jack Dempsey

Jack Dempsey is an aggressive freshwater fish that’s popular in aquaria. They require large tanks and are known for their enthusiastic personalities.

James’s Anchovy

James’s Anchovy is a saltwater fish that has commercial value. They are a critical part of the marine food chain.

Jenkin’s Scorpionfish

Jenkin’s Scorpionfish is a venomous and colorful reef fish that’s commonly found in aquaria.

Japanese Grenadier Anchovy

Japanese Grenadier Anchovy is a small saltwater fish that’s abundant. They are commonly found in the waters surrounding Japan.

Jenynsia Weitzmani

Jenynsia Weitzmani is a peaceful freshwater fish that thrives in schools. They are easy to care for and ideal for community tanks.

Japanese Bullhead Shark

Japanese Bullhead Shark is a small shark species that thrives at the bottom of tanks. They are unique in appearance and add a distinctive look to any tank.

Jack-Knifefish

Jack-Knifefish is a freshwater fish with a unique appearance. They are popular in aquaria due to their unique shape.

Japanese Butterfish

Japanese Butterfish is a saltwater fish that has commercial value. They have small size and are often used in traditional Japanese cuisine.

Japonolycodes Abei

Japonolycodes Abei is a rare and valuable deep-sea fish that’s prized for its unique taste. It’s not commonly available for purchase and is often sourced at auctions.

Javelin Pipefish

Javelin Pipefish is a saltwater fish that has a unique appearance. They have an elongated body and are masters at camouflage.

Jenynsia Eigenmanni

Jenynsia Eigenmanni is a freshwater fish that likes to school and thrives in forage fish environments.

Japanese Spanish Mackerel

Japanese Spanish Mackerel is a saltwater game fish that’s popular in sport fishing. They require a strong line and good fishing skills to catch.

Jenkins’ Blenny

Jenkins’ Blenny is a saltwater fish that’s popular in aquaria. They are herbivorous and easy to care for.

Japanese Snapper

Japanese Snapper is a saltwater game fish that’s popular in Japanese cuisine. They require a specific habitat to thrive and are often farm-raised.

Japanese Inflator Filefish

Japanese Inflator Filefish is a saltwater fish that has a unique appearance. They

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