Common name: Firefish

Gunnellichthys is a genus of fish commonly known as Firefish or Dartfish, belonging to the family Microdesmidae. These small, elongated fish are popular in the reef aquarium hobby for their vibrant colors and peaceful demeanor. They are known for their distinctive behavior of darting into burrows or crevices when startled. In the wild, they inhabit coral reefs and lagoons, often forming small groups. They require a well-established tank with plenty of hiding places and a sandy substrate to mimic their natural environment.

1. 
   Common name: Curious wormfish

   Scientific name: Gunnellichthys curiosus
2. Common name: Onespot wormfish

   Scientific name: Gunnellichthys monostigma
3. Common name: Onestripe wormfish

   Scientific name: Gunnellichthys pleurotaenia
4. 
   Common name: Yellowstripe wormfish

   Scientific name: Gunnellichthys viridescens