Firefish Goby (Nemateleotris magnifica)

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Firefish Goby (Nemateleotris magnifica)


The Firefish Goby, also called the Fire Dartfish, is a graceful and brilliantly colored saltwater fish. It’s one of the most popular beginner-friendly marine species because of its small size, peaceful nature, hardy constitution, and striking beauty.


Key Features

  • Appearance: White to yellow anterior (front) body fading into a bright red-orange tail with a long, trailing dorsal fin.
  • Size: 2.5–3 inches (6–8 cm).
  • Temperament: Peaceful, shy, and darting.
  • Diet: Carnivore — feeds on small meaty foods.
  • Habitat: Tropical reefs of the Indo-Pacific.

Firefish are known for their sudden, darting swimming style and their tendency to hover gracefully near their chosen shelter spot.


Common Names and Scientific Name

  • Common Names: Firefish Goby, Fire Dartfish, Fire Goby, Magnificent Dartfish
  • Scientific Name: Nemateleotris magnifica

Fun Fact:
The Firefish Goby can rotate its eyes independently to scan for both predators and prey without moving its body!





Appearance

Firefish Gobies have a very distinct, eye-catching look.

Coloration

  1. Body:
    • Front: White or light yellow.
    • Back half: Intense red-orange coloration extending to the tail.
  2. Fins:
    • Long, streamer-like first dorsal fin (especially prominent in males).
    • Pectoral fins are translucent.

Size

  • Average Size: 2.5–3 inches (6–8 cm).

Shape

  • Body: Slender, elongated, and torpedo-shaped.
  • Face: Rounded head with large, curious eyes.
  • Fins: Notable elongated dorsal fin used for communication and threat displays.

Sexual Dimorphism

  • Males: Slightly larger and have a more elongated dorsal fin.
  • Females: Slightly smaller with a shorter dorsal fin.




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