Marine Fish Encyclopedia — 80 Species Directory
Encyclopedia of popular marine fish species with care guides, traits, and water parameters.
Featured Marine Fish
Showing 3 of 80 species
Blue Spotted Jawfish
Opistognathus rosenblatti
Stunningly beautiful jawfish with orange body dotted in blue spots. Charming behavior — digs burrows and pokes out head. Fascinating mouthbrooding reproduction.
AdvancedBeautifulBurrower
Moorish Idol
Zanclus cornutus
Elegant marine fish with vivid white, black, and yellow stripes and elongated dorsal fin. Stunningly beautiful but extremely difficult to keep. Feeding is challenging even for experts.
AdvancedBeautifulDifficult
© Diego Delso / CC BY-SA 4.0Powder Blue Tang
Acanthurus leucosternon
Beautiful pale blue body with black face and yellow dorsal. Indian Ocean tang. Prone to ich — water quality is critical.
BeautifulIch-proneAdvanced
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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.