30 Most Beautiful Reef Safe Fish for Marine Tanks

As a passionate aquarium hobbyist, I’ve always been captivated by the dazzling world of marine life, particularly when it comes to the vivid and diverse inhabitants of coral reefs.

by Fabian

Updated: April 24, 2023 / 19 mins read

Fabian is the dedicated Chief Editor at Aquarium Nexus. From a young age, he was captivated by the vibrant world of aquatic life, leading him to accumulate over 20 years of experience in keeping and breeding various fish species. The fulfillment derived from the aquarium hobby has remained a constant throughout Fabian's life. As an expert in the field, he finds great pleasure in imparting his extensive knowledge and personal experiences to both seasoned aficionados and budding enthusiasts.

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In this article, I’ll be sharing my personal insights on of the most beautiful reef-safe fish that you can incorporate into your own vibrant and thriving underwater ecosystem. So, join me as we dive into the mesmerizing realm of these enigmatic and enchanting marine creatures, and get ready to be mesmerized by their unmatched beauty and allure.

Mandarinfish

The Mandarinfish, known scientifically asSynchiropus splendidus, is an exquisite and captivating species renowned for its vibrant, psychedelic coloration. Hailing from the Pacific Ocean, these elusive and enchanting creatures can make a fantastic addition to your reef tank, provided their specific care requirements are met.

Reef Safe:5/5
Diet:Carnivore; copepods and amphipods
Tank Size:Minimum 30 gallons (113 liters) per fish
Care Level:Difficult
Lifespan:10-15 years
Temperature:72-82°F (22-28°C)
Adult Size:2-3 inches (5-7.6 cm)

Despite their undeniable allure, Mandarinfish are not recommended for beginners due to their particular dietary needs and timid nature.

Royal Gramma

The Royal Gramma, orGramma loreto, is a strikingly beautiful and enchanting fish species that can add a touch of regal elegance to any reef aquarium. With its fascinating purple and yellow coloration, these captivating creatures are native to the warm waters of the Caribbean.

Reef Safe:5/5
Diet:Carnivore; brine shrimp, mysis shrimp, and prepared foods
Tank Size:Minimum 20 gallons (75 liters)
Care Level:Easy
Lifespan:5-6 years
Temperature:72-78°F (22-26°C)
Adult Size:2-3 inches (5-7.6 cm)

Being relatively small in size and peaceful in nature, the Royal Gramma is an excellent choice for both novice and experienced aquarists, setting a majestic tone for any reef-safe fish collection.

Bartlett’s Anthias

Bartlett’s Anthias (Pseudanthias bartlettorum) is a splendid and radiant fish species, boasting brilliant hues of pink and orange that shimmer and captivate in a reef aquarium. Known for their social nature, these beautiful fish flourish in the waters of the Indo-Pacific region.

Reef Safe:5/5
Diet:Carnivore; zooplankton, mysis shrimp, and brine shrimp
Tank Size:Minimum 125 gallons (473 liters)
Care Level:Moderate
Lifespan:5 years
Temperature:74-81°F (23-27°C)
Adult Size:2-3.5 inches (5-9 cm)

For those looking to emulate the vivid colors of a natural reef, Bartlett’s Anthias are an excellent choice, although they do require a larger tank and a more established aquarium to truly thrive.

Flame Angelfish

The Flame Angelfish (Centropyge loriculus), with its fiery and intense coloration, is a stunning presence in any marine aquarium. Native to the South Pacific, these striking fish add a bold splash of color and personality to a reef tank.

Reef Safe:3/5 (nipping behavior possible)
Diet:Omnivore; algae, mysis shrimp, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Moderate
Lifespan:5-7 years
Temperature:72-79°F (22-26°C)
Adult Size:3-4 inches (7.6-10.2 cm)

Though generally considered to be reef safe, Flame Angelfish do have a tendency to nip at corals and invertebrates, making them a potentially risky addition for some reef aquariums. Caution and close observation are advised for aquarists considering this lively species.

Barred Angelfish

The Barred Angelfish (Pomacanthus maculosus), with its striking pattern of interlaced lines on a deep blue canvas, is an intriguing and eye-catching addition to any marine aquarium. Calling the Red Sea and Indian Ocean home, these mesmerizing fish are a true conversation piece.

Blueface Angelfish

The Blueface Angelfish (Pomacanthus xanthometopon), as its name suggests, features a striking blue face adorned with intricate, maze-like patterns. Native to the Indo-Pacific region, this charismatic species adds a unique touch of elegance to any large home aquarium.

Reef Safe:2/5 (may nip at corals and invertebrates)
Diet:Omnivore; algae, sponges, tunicates, and prepared foods
Tank Size:Minimum 220 gallons (832 liters)
Care Level:Moderate
Lifespan:up to 20 years
Temperature:72-78°F (22-26°C)
Adult Size:12-14 inches (30-35.5 cm)

Though their bold appearance makes them a desirable addition to your underwater paradise, the Blueface Angelfish’s tendency to snack on corals and invertebrates renders them less than ideal for reef aquariums. Moreover, their care requirements make them best suited for seasoned marine aquarists.

Bellus Angelfish

The Bellus Angelfish (Genicanthus bellus) is a delightful and elegant fish species, displaying stunning striped patterns with a gentle gradient of color. These graceful swimmers call the deep waters of the Indo-Pacific their home.

Reef Safe:4.5/5 (generally coral-safe but may peck at fan worms)
Diet:Omnivore; zooplankton, algae, and prepared foods
Tank Size:Minimum 120 gallons (454 liters)
Care Level:Moderate
Lifespan:7-10 years
Temperature:74-82°F (23-28°C)
Adult Size:5.5-7 inches (13.9-17.8cm)

While mostly peaceful and reef safe, Bellus Angelfish may occasionally bother fan worms. Despite this minor issue, their unique beauty and mesmerizing demeanor make them a noteworthy addition to well-suited reef aquariums, though it’s important to closely observe their behavior if housing them with sensitive invertebrates.

Dogface Pufferfish

The Dogface Pufferfish (Arothron nigropunctatus), with its peculiar appearance and unmistakable charm, is a unique addition to a large marine aquarium. Hailing from the Indo-Pacific region, these gentle giants are known for their captivating personalities.

Reef Safe:2/5 (may nip at corals and invertebrates)
Diet:Carnivore; crustaceans, mollusks, and prepared foods
Tank Size:Minimum 125 gallons (473 liters)
Care Level:Easy
Lifespan:10+ years
Temperature:72-78°F (22-26°C)
Adult Size:12-14 inches (30-36 cm)

Although endearing, Dogface Pufferfish are not ideal residents for reef aquariums due to their tendency to chew on corals and invertebrates. However, their outgoing nature and hardiness make them an appealing option for aquarists with spacious fish-only aquariums.

Longhorn Cowfish

The Longhorn Cowfish (Lactoria cornuta), with its unusual boxy shape and striking horn-like protrusions, is an undeniably fascinating addition to a large marine aquarium. Native to the Indo-Pacific region, these quirky fish exude character and charisma.

Reef Safe:2/5 (may nip at corals and invertebrates)
Diet:Omnivore; algae, small crustaceans, and prepared foods
Tank Size:Minimum 180 gallons (680 liters)
Care Level:Moderate
Lifespan:5-7 years
Temperature:72-78°F (22-26°C)
Adult Size:16-20 inches (40-51 cm)

Though enigmatic, Longhorn Cowfish are less suitable for reef aquariums as they may nibble on corals and invertebrates. Their sensitive nature and large size also require diligent care, making this extraordinary species best suited for experienced aquarists with ample tank space.

Valentini Pufferfish

The Valentini Pufferfish (Canthigaster valentini), sometimes referred to as the Black Saddle Puffer, is a small and intriguing fish species adorned with captivating patterns. These charming creatures are found throughout the Indo-Pacific region.

Reef Safe:2/5 (may nip at corals and invertebrates)
Diet:Carnivore; crustaceans, mollusks, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Moderate
Lifespan:5-7 Years
Temperature:72-78°F (22-26°C)
Adult Size:3-4 inches (7.6-10.2 cm)

While the Valentini Pufferfish is small enough to fit into most aquariums, their penchant for nipping at corals and invertebrates means they’re less suitable for reef settings. Nonetheless, their fascinating appearance and engaging behavior make them a popular choice for marine fish-only tanks.

Copperband Butterflyfish

The Copperband Butterflyfish (Chelmon rostratus), with its striking vertical bands of copper and white, is a gorgeous and alluring inhabitant of the Indo-Pacific. These elegant fish make an attractive addition to any marine aquarium.

Reef Safe:3/5 (caution needed – may pick at feather duster worms and small polyp stony corals)
Diet:Carnivore; bristle worms, small crustaceans, and prepared foods
Tank Size:Minimum 70 gallons (265 liters)
Care Level:Moderate
Lifespan:5-7 years
Temperature:74-79°F (23-26°C)
Adult Size:7-9 inches (18-23 cm)

Although Copperband Butterflyfish may exhibit some coral-nipping behavior, they can be a stunning addition to a carefully chosen reef aquarium. With proper care and attention, these sleek fish will undoubtedly captivate both you and your visitors.

Saddleback Butterflyfish

The Saddleback Butterflyfish (Chaetodon ephippium), characterized by its distinctive black saddle-shaped marking, adds dramatic contrast and visual interest to any marine aquarium. This species can be found throughout the Indian and Pacific Oceans.

Reef Safe:1/5 (can eat coral polyps and invertebrates)
Diet:Omnivore; coral polyps, invertebrates, and prepared foods
Tank Size:Minimum 125 gallons (473 liters)
Care Level:Moderate
Lifespan:7-10 years
Temperature:72-78°F (22-26°C)
Adult Size:10-12 inches (25-30.5 cm)

Though the Saddleback Butterflyfish boasts a striking appearance, its proclivity for feasting on coral polyps and invertebrates renders it less suitable for reef aquariums. Instead, this species is best housed in a large fish-only or fish-with-live-rock setup.

Banggai Cardinal

The Banggai Cardinal (Pterapogon kauderni), with its captivating black stripes and shimmering silver highlights, is a striking addition to a peaceful reef aquarium. This serene and visually pleasing species thrives in the warm waters surrounding the Banggai Islands in Indonesia.

Reef Safe:5/5
Diet:Carnivore; small crustaceans, brine shrimp, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:5-7 years
Temperature:79-82°F (26-28°C)
Adult Size:2.5-3 inches (6.4-7.6 cm)

With its harmonious disposition and reef safe status, the Banggai Cardinal makes an excellent choice for aquarium enthusiasts looking to create a serene underwater environment inhabited by a diverse array of vibrant creatures.

Blackstripe Cardinalfish

The Blackstripe Cardinalfish (Ostorhinchus nigrofasciatus), displaying a striking pattern of vertical black stripes on a translucent body, can add a touch of intrigue to any peaceful reef aquarium. This hardy and charming species is native to the Indo-Pacific region.

Ringtailed Cardinalfish

The Ringtailed Cardinalfish (Apogon aureus), sporting a distinctive pattern of black-ringed, silvery stripes, is an entrancing sight in any peaceful reef aquarium. These captivating fish can be found in the waters of the Western Indian Ocean.

Reef Safe:5/5
Diet:Carnivore; small crustaceans, brine shrimp, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:5 years
Temperature:72-79°F (22-26°C)
Adult Size:2-3 inches (5-7.6 cm)

Owing to their reef safe status and tranquil demeanor, the Ringtailed Cardinalfish is an excellent choice for both novice and experienced aquarists seeking to enhance their underwater oasis with visually stunning and harmonious inhabitants.

Green Chromis

The Green Chromis (Chromis viridis) is a delightful and vivacious species that can bring a breathtaking splash of color to any reef aquarium. These lively, schooling fish are found in the warm waters of the Indo-Pacific.

Reef Safe:5/5
Diet:Omnivore; plankton, algae, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:6-10 years
Temperature:74-82°F (23-28°C)
Adult Size:3-3.5 inches (7.6-9 cm)

With their shimmering emerald hues and peaceful temperament, Green Chromis make an ideal choice for those looking to establish harmonious and vibrant reef aquarium communities, particularly when housed in a shoal.

Spiny Chromis

The Spiny Chromis (Acanthochromis polyacanthus) is a captivating species that offers a distinctive charm and versatility to any reef aquarium. With their contrasting stripes and peaceful nature, these attractive fish inhabit the warm waters of the Great Barrier Reef.

Reef Safe:5/5
Diet:Omnivore; zooplankton, algae, and prepared foods
Tank Size:Minimum 65 gallons (246 liters)
Care Level:Moderate
Lifespan:5-8 years
Temperature:74-81°F (23-27°C)
Adult Size:3.5-4.5 inches (9-11.4 cm)

A perfect addition to a thriving reef aquarium, the Spiny Chromis not only boasts an appealing appearance, but also serves as a prime example of a hardy and amicable species that plays well with a diverse range of tank mates.

Tomato Clownfish

The Tomato Clownfish (Amphiprion frenatus), with its distinct bright orange coloration and bold black stripe, makes a lively and engaging addition to a reef aquarium. Originating from the tropical waters of the Indian and Pacific Oceans, these spirited fish are renowned for their captivating personalities.

Reef Safe:5/5
Diet:Omnivore; algae, crustaceans, and prepared foods
Tank Size:Minimum 20 gallons (75 liters)
Care Level:Easy
Lifespan:6-10 years
Temperature:74-80°F (23-27°C)
Adult Size:3-4 inches (7.6-10.2 cm)

Ideal for both newcomers and seasoned aquarists, the Tomato Clownfish makes a colorful and dynamic statement in any reef tank, guaranteeing hours of entertainment and delight from observing their enchanting interactions and behaviors.

Maroon Clownfish

The Maroon Clownfish (Premnas biaculeatus), displaying a rich, velvety maroon hue, offers a touch of regal elegance to any reef aquarium. Indigenous to the Indo-Pacific region, these captivating fish are known for their feisty attitudes and endearing personalities.

Reef Safe:4.5/5 (may be territorial)
Diet:Omnivore; algae, crustaceans, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Moderate
Lifespan:up to 20 years
Temperature:72-79°F (22-26°C)
Adult Size:5-6 inches (12.7-15.2 cm)

Though the Maroon Clownfish is generally considered reef safe, their territorial behavior might warrant caution when introducing them to certain aquarium settings. Nonetheless, their majestic appearance and spirited demeanor are sure to captivate the hearts of marine enthusiasts.

Azure Damsel

The Azure Damsel (Chrysiptera hemicyanea), sporting a breathtaking combination of shimmering blue and radiant yellow, can bring a striking pop of color to any peaceful reef aquarium. These enthralling fish inhabit the warm and pristine waters of the Western Pacific.

Reef Safe:5/5
Diet:Omnivore; algae, zooplankton, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:5-7 years
Temperature:73-80°F (23-27°C)
Adult Size:2.5-3 inches (6.4-7.6 cm)

The Azure Damsel is an excellent choice for those looking to add vibrant charm and energy to their underwater sanctuary, ensuring a dazzling display of life and color in their reef aquarium.

Garibaldi Damsel

The Garibaldi Damsel (Hypsypops rubicundus), adorned with an eye-catching hue of brilliant orange, is a stunning and lively addition to a suitable marine aquarium. Hailing from the Eastern Pacific along the Californian and Baja coastline, this feisty fish is known to pack a punch in personality.

Reef Safe:3/5 (due to territorial behavior)
Diet:Omnivore; sponges, algae, and prepared foods
Tank Size:Minimum 70 gallons (265 liters)
Care Level:Moderate
Lifespan:15-20 years
Temperature:56-69°F (13-20°C)
Adult Size:9-12 inches (23-30 cm)

Given their territorial tendencies, Garibaldi Damselfish may not be the ideal choice for every reef aquarium. However, their vibrant color and unique character make them a fascinating and attractive option for larger, carefully curated aquatic environments.

Yellowtail Blue Damsel

The Yellowtail Blue Damsel (Chrysiptera parasema), showcasing a vivid blue body and contrasting yellow tail, is an enchanting and eye-catching addition to any peaceful reef aquarium. Originating from the waters of the Western Pacific, these lively fish are admired for their vibrant presence.

Reef Safe:5/5
Diet:Omnivore; algae, zooplankton, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:3-7 years
Temperature:75-81°F (24-27°C)
Adult Size:2-2.5 inches (5-6.4 cm)

With their brilliant colors, harmonious nature, and high reef compatibility, the Yellowtail Blue Damsel makes an excellent choice for aquarists looking to enliven their underwater oasis with striking hues and energetic swimming patterns.

Fire Fish Goby

The Fire Fish Goby (Nemateleotris magnifica), with its vibrant red and orange hues and graceful elongated dorsal fin, is a mesmerizing and enchanting addition to any reef aquarium. These timid yet beautiful creatures are native to the warm waters of the Pacific Ocean.

Reef Safe:5/5
Diet:Carnivore; plankton, brine shrimp, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:3-5 years
Temperature:72-80°F (22-27°C)
Adult Size:3-3.5 inches (7.6-9 cm)

With their serene disposition and delicate beauty, the Fire Fish is a striking and captivating option for those wishing to create a tranquil underwater display teeming with magnificent and awe-inspiring inhabitants.

Striped Blenny

The Striped Blenny (Meiacanthus grammistes), boasting an engaging pattern of alternating black and white stripes, brings a touch of whimsy and character to any reef aquarium. These personable fish can be found in the warm waters of the Western Central Pacific.

Reef Safe:5/5
Diet:Carnivore; amphipods, copepods, and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:4-6 years
Temperature:72-78°F (22-26°C)
Adult Size:4-4.5 inches (10-11.4 cm)

As a highly compatible and charming species, the Striped Blenny makes an excellent addition to a diverse reef aquarium, offering a captivating blend of intriguing behavior, striking appearance, and harmonious coexistence with its fellow tank inhabitants.

Lawnmower Blenny

The Lawnmower Blenny (Salarias fasciatus), named for its voracious appetite for algae, is a charming and beneficial addition to any reef aquarium in need of natural algae control. These captivating fish are found in the warm tropical waters of the Indo-Pacific.

Reef Safe:5/5
Diet:Herbivore; microalgae and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Easy
Lifespan:2-4 years
Temperature:74-79°F (23-26°C)
Adult Size:4-6 inches (10-15 cm)

The Lawnmower Blenny not only adds a touch of personality and character to your underwater world, but also serves as an efficient and eco-friendly solution to keep unsightly algae growth in check.

Catalina Goby

The Catalina Goby (Lythrypnus dalli), showcasing a striking red body and stunning blue stripes, can add a vibrant flair to a cold-water marine aquarium. Originally from the kelp forests of the Californian and Baja coastline, these attention-grabbing fish are a charming and captivating sight.

Reef Safe:5/5
Diet:Carnivore; copepods, amphipods, and prepared foods
Tank Size:Minimum 20 gallons (75 liters)
Care Level:Moderate
Lifespan:2-3 years
Temperature:58-68°F (14-20°C)
Adult Size:1.5-2 inches (3.8-5 cm)

While the Catalina Goby makes a stunning visual statement, their compatibility in a traditional tropical reef aquarium is limited due to their affinity for cooler water temperatures. They require a dedicated cold-water tank to truly thrive.

Neon Goby

The Neon Goby (Elacatinus oceanops), with its sleek black body and vibrant neon blue stripe, can make a visually striking addition to any reef aquarium. These tiny but lively fish hail from the warm tropical waters of the Western Atlantic.

Reef Safe:5/5
Diet:Carnivore; small crustaceans, parasites, and prepared foods
Tank Size:Minimum 10 gallons (37 liters)
Care Level:Easy
Lifespan:1-2 years
Temperature:72-82°F (22-28°C)
Adult Size:1-2 inches (2.5-5 cm)

In addition to their eye-catching appearance, the Neon Goby is also known for its natural cleaning abilities, making it both an aesthetically pleasing and practical addition to your underwater haven.

Banded Pipefish

The Banded Pipefish (Doryrhamphus dactyliophorus), sporting a striking pattern of alternating black and white bands, introduces a touch of unique elegance to a docile, species-specific reef aquarium. Native to the tropical waters of the Indo-Pacific, these enigmatic fish capture attention with their slender bodies and intricate markings.

Reef Safe:4/5 (may be aggressive toward other pipefish)
Diet:Carnivore; small crustaceans and prepared foods
Tank Size:Minimum 30 gallons (113 liters)
Care Level:Moderate
Lifespan:5-10 years
Temperature:72-78°F (22-26°C)
Adult Size:6-7 inches (15-18 cm)

While the Banded Pipefish adds an element of intrigue and sophistication to a reef aquarium, they require a carefully curated environment, ideally with minimal competition from other pipefish or seahorses, in order to truly thrive.

Hippo Tang

The Hippo Tang, also known as the Regal Blue Tang, is an oceanic gem that boasts an electric blue body with striking black markings. This vibrant fish, famously featured in the movie “Finding Nemo,” is a popular addition to reef aquariums.

Reef Safe:4/5
Diet:Omnivore – algae and meaty foods.
Tank Size:Minimum 125 gallons (473 liters)
Care Level:Moderate
Lifespan:8-20 years
Temperature:72-82°F (22-28°C)
Adult Size:12 inches (30.5 cm)

Despite their stunning appearance, they do require diligent care and ample space to gracefully swim and maintain their health. So make sure your tank is adequately sized for this delightful swimmer.

Harlequin Tusk

The Harlequin Tusk is a truly one-of-a-kind fish species sporting a bold mix of colors and intricate patterns. With their dazzling blue-green stripes and sharp, tusk-like teeth, they never fail to leave a lasting impression on any aquarist.

Reef Safe:3/5
Diet:Carnivore – crustaceans and meaty foods.
Tank Size:Minimum 125 gallons (473 liters)
Care Level:Moderate
Lifespan:5-10 years
Temperature:72-78°F (22-26°C)
Adult Size:10 inches (25.5 cm)

Be aware that the Harlequin Tusk may nip at invertebrates, so exercise caution if your reef aquarium is home to a diverse range of critters. Nevertheless, with the proper care and attention, these magnificent creatures can bring a distinctive charm to your aquatic world.

Conclusion

In the captivating universe of reef ecosystems, the mesmerizing and enchanting array of reef-safe fish truly elevates your aquarium experience. From the beautiful Mandarinfish to the striking Harlequin Tusk, these diverse and beautiful species provide exquisite visual enjoyment and allow you to appreciate the wonders of the marine world from the comfort of your own home.

As always, make sure you research the specific needs of each chosen species to ensure a happy, healthy, and thriving aquatic environment. Now it’s time to dive in and discover your favorite reef-safe fish!

30 Most Beautiful Reef Safe Fish for Marine Tanks - AquariumNexus (2024)