How to Identify Celestial Pearl Danio

To identify Celestial Pearl Danio (Danio margaritatus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is predominantly dark blue to black, covered with approximately 10-15 irregular, pearlescent, iridescent spots arranged in horizontal rows. Males display vibrant red or orange and black stripes on their dorsal, anal, and caudal fins, which are less pronounced or absent in females. The belly is typically lighter.

Scale type

cycloid

Mouth position

superior

Distinctive features

Small size, typically reaching 2-2.5 cm (0.8-1 inch) in total length., Distinctive pearlescent spots on a dark body., Sexually dimorphic coloration, especially in fin patterns., Absence of barbels, a key differentiator from many other Danio species.

Dorsal fin

Single, short-based, positioned posteriorly, with red/orange and black stripes in males.

Tail fin

Forked, with red/orange and black stripes in males.

Pectoral fin

Small, clear to slightly tinted.

Distinctive fins

All fins are relatively small and transparent, except for the vibrant coloration on the dorsal, anal, and caudal fins of males.

Identification Tips

1. 1

   Size and Shape

   Look for a very small, slender fish, typically under an inch long, with a slightly compressed body.

2. 2

   Body Pattern

   The most striking feature is the dark body covered in numerous small, iridescent, pearl-like spots. This 'galaxy' pattern is unique.

3. 3

   Fin Coloration (Males)

   Males will have bright red or orange and black stripes on their dorsal, anal, and caudal fins. Females have much duller or absent fin coloration.

4. 4

   Absence of Barbels

   Unlike many other Danio species, D. margaritatus lacks barbels around its mouth.

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