Clown Rasbora (Rasbora kalochroma) in aquarium
๐ŸŒฟ Freshwater ยท Tropical

Clown Rasbora

Rasbora kalochroma โ€” Cyprinidae
๐Ÿ“ Size:ย 2.5-3
โณ Lifespan:ย 4
โญ Care level:ย Beginner

Overview

The Clown Rasbora is a vibrant and popular freshwater fish known for its striking coloration. These slender, laterally compressed fish are known to be peaceful and make great additions to community tanks. They are best kept in groups and require a well-maintained, spacious tank to thrive. They are easy to care for and can be a great choice for beginners.

Quick fact: Rasbora kalochroma belongs to the family Cyprinidae. Care level: beginner.

Scientific Classification

RankClassification
FamilyCyprinidae
GenusRasbora
SpeciesRasbora kalochroma
Water typefreshwater

Natural Habitat

Native to the slow-moving streams and rivers of Southeast Asia, the Clown Rasbora prefers a slightly acidic to neutral water condition with a soft to moderate water hardness.

Appearance

Clown Rasboras have a distinctive appearance with a reddish-brown body that contrasts beautifully with their bright blue fins. Their slender, laterally compressed bodies make them a graceful addition to any aquarium.

Coloration: Reddish-brown body with bright blue fins

Behavior

These fish are known to be quite active and are often observed darting around the tank. They do best in groups of six or more, and they are compatible with most other peaceful community fish.

TraitValue
Temperamentpeaceful community fish
SchoolingYes
Activity levelmoderate
Important: prefer to be in groups of 6 or more

Water Requirements

ParameterIdeal RangeNotes
Temperature22โ€“28ยฐC (72โ€“82ยฐF)Use a reliable adjustable heater
pH6โ€“7.5Avoid sudden swings
Hardness (GH)5-15 dGH dGHSoft to moderately hard
Ammonia0 ppmAny detectable ammonia signals a problem
Nitrite0 ppmToxic even at low levels
Nitrate<20 ppmManage through regular partial water changes
Min. tank30L (8 gal)Larger tanks are easier to keep stable
Important: Always dechlorinate tap water before adding it to the tank. Chlorine and chloramines damage a fish's gills and reduce life expectancy.

Interesting Facts

  • Clown Rasboras are known for their bright and contrasting colors.
  • They are often used in the aquarium trade to add a touch of color and movement.
  • These fish are also known to be quite resilient and can adapt to various water conditions.

๐Ÿ“‹ Full Care Guide

Ready to set up a tank for your Clown Rasbora? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.

Read Clown Rasbora Care Guide โ†’

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Editorial review

This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.