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Tropical Fish Encyclopedia — 71 Species Directory

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

Featured Tropical Fish

Ram CichlidEndler's Guppy
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SchoolingSmallPlanted tankHardyTetraEasy breedingPeacefulColorfulAlgae cleanerShrimpUltra-smallUniqueLargeAlgae eaterRed

Showing 1 of 71 species

Celestial Pearl Danio© Cisamarc / CC BY-SA 3.0

Celestial Pearl Danio

Danio margaritatus

Intermediate

A tiny fish with jewel-like body scattered with white pearl patterns. A gem for planted tanks.

CPDMicro fishPearl pattern
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Tropical Fish FAQ

Can beginners keep tropical fish?
Guppies, neon tetras, and corydoras are hardy and perfect for beginners. They can be kept in small tanks, and as long as you manage water temperature, it's relatively easy to get started.
How much do tropical fish cost?
Neon tetras cost 100-300 yen each, guppies 300-2,000 yen, bettas 1,000-10,000 yen, and premium discus 5,000-50,000+ yen depending on the species.
How long do tropical fish live?
Small tetras live 2-5 years, guppies 1-2 years, corydoras 5-10 years, and discus 10+ years, varying greatly by species.
What's the minimum equipment needed?
You'll need a tank, heater, filter, light, and water conditioner at minimum. A 30cm tank can house 5-10 small fish and doesn't take much space.
What should I check when buying tropical fish?
Check for vivid coloring, active swimming, and no signs of disease like ich. After purchase, acclimate carefully and avoid sudden temperature changes.