How to Identify GloFish

To identify GloFish (Danio rerio (modified)), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Artificially vibrant, fluorescent colors including red ('Starfire Red'), green ('Electric Green'), orange ('Sunburst Orange'), blue ('Cosmic Blue'), purple ('Galactic Purple'), and pink ('Moonrise Pink'). These colors are uniform across the body, often with faint horizontal stripes visible beneath the fluorescence, characteristic of the wild-type Danio rerio.

Scale type

cycloid

Mouth position

superior

Distinctive features

Genetically engineered fluorescent pigmentation, Small, slender, torpedo-shaped body, Single dorsal fin, Forked caudal fin, Two pairs of barbels (often very small and difficult to see)

Dorsal fin

Single, short-based, located mid-body.

Tail fin

Deeply forked, symmetrical.

Pectoral fin

Small, fan-shaped, located just behind the operculum.

Distinctive fins

All fins are typically translucent and may exhibit some fluorescent coloration depending on the specific genetic modification.

Identification Tips

1. 1

   Coloration

   The most obvious identifying feature is their intense, unnatural fluorescent coloration (red, green, orange, blue, purple, pink) which glows under specific lighting. Wild-type Danio rerio have silver-gold bodies with distinct horizontal blue-black stripes.

2. 2

   Body Shape and Size

   They possess the characteristic slender, torpedo-shaped body of a zebra danio, typically reaching 3-4 cm (1.2-1.6 inches) in length.

3. 3

   Behavior

   Active, schooling fish that constantly swim, primarily in the upper and middle water columns. This behavior is identical to their wild counterparts.

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