How to Identify GloFish Tetra

To identify GloFish Tetra (Gymnocorymbus ternetzi (genetically modified)), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Artificially vibrant fluorescent colors (e.g., 'Starfire Red', 'Electric Green', 'Sunburst Orange', 'Cosmic Blue', 'Galactic Purple') due to genetic modification. The base body shape and fin structure are similar to the Black Skirt Tetra, which is typically silvery-grey with two prominent vertical black bars when young, fading with age.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Genetically engineered fluorescent coloration, Two prominent vertical bars (often obscured by fluorescent pigment in adults), Deep, compressed body, Large anal fin extending from behind the pelvic fins to the caudal peduncle

Dorsal fin

Small, triangular, located mid-body.

Tail fin

Forked, moderately sized.

Pectoral fin

Small, clear.

Distinctive fins

Large, sail-like anal fin that extends along much of the ventral side of the body.

Identification Tips

1. 1

   Coloration

   The most obvious identifying feature is their intense, unnatural fluorescent colors (red, green, orange, blue, purple). No naturally occurring fish exhibits these specific vibrant hues.

2. 2

   Body Shape

   Deep, laterally compressed body, typical of the Black Skirt Tetra. Adults can reach up to 2.5 inches (6.5 cm) in length.

3. 3

   Fin Structure

   The large, elongated anal fin is a key morphological characteristic inherited from its wild ancestor, the Black Skirt Tetra.

4. 4

   Behavior

   Active schooling fish, constantly moving in groups, especially when kept in appropriate numbers.

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