Marine Fish Encyclopedia — 80 Species Directory
Encyclopedia of popular marine fish species with care guides, traits, and water parameters.
Featured Marine Fish
Showing 4 of 80 species
Bicolor Dottyback
Pseudochromis paccagnellae
Small saltwater fish divided into two colors: purple front half and vivid yellow rear half. Compact and hardy, easy to keep in small tanks and popular with beginners. Somewhat territorial.
Watchman Goby
Valenciennea longipinnis
Small goby with cute yellow body and blue dot pattern. Famous for symbiosis with pistol shrimp, where shrimp digs burrow and goby stands watch. Hardy and easy to keep.
Yellow Coris Wrasse
Halichoeres chrysus
A wrasse adding color to tank with vivid yellow body. Useful fish also active in pest control.
© USGS - Individual photographer uncredited by source. / Public domainYellow Watchman Goby
Cryptocentrus cinctus
A beautiful goby with vivid yellow body. Symbiotic relationship with pistol shrimp observable in tank.
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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.