Is keeping marine fish difficult?

While more water quality management is needed compared to freshwater, starting with hardy species like clownfish or blue-green chromis makes it very manageable for beginners. Stable salinity and temperature are key.

How much do marine fish cost?

Clownfish range from 2,000-5,000 yen, blue tangs from 5,000-15,000 yen, and popular angelfish from 5,000-50,000+ yen depending on species and size.

How long do marine fish live?

Small fish live 5-10 years, while medium species like angelfish can live 10-20+ years. Proper environment and nutrition enable long-term care.

What should I check when buying marine fish?

Check for white spots or injuries on the body, intact fins, and that the fish is eating well. Choosing quarantined specimens gives extra peace of mind.

What equipment is needed for marine fish?

Basic equipment includes a tank, salt mix, refractometer, canister filter or overflow system, heater, and protein skimmer. Starting with a 60cm+ tank is recommended.

Marine Fish Encyclopedia — 80 Species Directory

Encyclopedia of popular marine fish species with care guides, traits, and water parameters.

Featured Marine Fish

Harlequin Tuskfish

All Beginner Intermediate Advanced

Small Hardy Beautiful Yellow Algae eater Reef-safe Reef safe Schooling Peaceful Purple Cleaner Large Tang Marine fish Mouthbrooder

Showing 6 of 80 species

Fire Shrimp

Lysmata debelius

Beginner

A prized cleaner shrimp with a deep blood-red body, white-socked legs, and long white antennae. It cleans parasites off fish, is hardy and reef-safe, and is stunning to look at.

CleanerShrimpDeep red

Flame Wrasse

Cirrhilabrus jordani

Intermediate

Hawaiian endemic wrasse with vivid red-orange flame-like coloration. Males display even more vivid nuptial colors. Peaceful nature ideal for reef tanks. A deeper water species.

IntermediateBeautifulReef safe

McCosker's Flasher Wrasse

Paracheilinus mccoskeri

Intermediate

Beautiful small wrasse with orange body and neon blue lines. Males 'flash' by spreading fins during courtship — hence the name. Reef safe and community-friendly.

IntermediateSmallBeautiful

Scarlet Skunk Cleaner Shrimp

Lysmata amboinensis

Beginner

Large cleaner shrimp with red body and white dorsal stripe. Famous for cleaning parasites off fish. Excellent tank cleaner. Hermaphroditic — breeding possible.

Beginner-friendlyShrimpCleaner

Strawberry Conch

Conomurex luhuanus

Beginner

A master sand-cleaner that sifts the substrate with its long proboscis to eat detritus, leftovers, and diatoms, keeping the sand bed clean without stirring it up. Reef-safe.

Sand cleanerSnailReef safe

Turbo/Trochus Snail

Trochus spp. / Turbo spp.

Beginner

A classic cleanup-crew snail that rasps algae off glass and live rock. Reef-safe and hardy, it is a first line of defense against algae.

Algae cleanerSnailReef safe

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Marine Fish FAQ

Is keeping marine fish difficult?: While more water quality management is needed compared to freshwater, starting with hardy species like clownfish or blue-green chromis makes it very manageable for beginners. Stable salinity and temperature are key.
How much do marine fish cost?: Clownfish range from 2,000-5,000 yen, blue tangs from 5,000-15,000 yen, and popular angelfish from 5,000-50,000+ yen depending on species and size.
How long do marine fish live?: Small fish live 5-10 years, while medium species like angelfish can live 10-20+ years. Proper environment and nutrition enable long-term care.
What should I check when buying marine fish?: Check for white spots or injuries on the body, intact fins, and that the fish is eating well. Choosing quarantined specimens gives extra peace of mind.
What equipment is needed for marine fish?: Basic equipment includes a tank, salt mix, refractometer, canister filter or overflow system, heater, and protein skimmer. Starting with a 60cm+ tank is recommended.