Saltwater Fish
Goldspot Blenny

Species Description…

Scientific Name: Istiblennius chrysospilos
Common Name: Goldspot Blenny
Species Group: Blenny
Habitat: Reef Safe
Care Level: Beginner
Temperament: Peaceful
Diet Type: Omnivore
Role in Aquarium: Cleanup Crew
Max Fish Length: 3 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific, including the Red Sea, Indonesia, and the Philippines
Istiblennius chrysospilos - Goldspot Blenny

Istiblennius chrysospilos (Goldspot Blenny)

Overview

  • Native to shallow coastal waters and intertidal zones of the Indo-Pacific region.
  • Named for the distinct golden-orange spots scattered across its body.
  • Often found perched on rocks or coral structures, scanning its surroundings.
  • An entertaining and active species that brings personality to a marine aquarium.

Feeding

  • Primarily herbivorous, grazing on algae and biofilm growing on rocks.
  • Accepts prepared foods such as seaweed sheets, algae-based pellets, and blanched vegetables.
  • Providing a natural source of algae within the aquarium helps mimic its wild feeding habits.
  • Frequent small meals are recommended to maintain its health and activity levels.

Habitat

  • Prefers reef and rocky environments with plenty of crevices for hiding.
  • Can tolerate intertidal conditions and is often seen out of the water at low tide.
  • Requires an aquarium with live rock to encourage natural foraging behavior.
  • Moderate water flow supports its active swimming and grazing patterns.

Fish Care

  • Optimal water temperature: 75-82°F (24-28°C).
  • pH level: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Resilient and adaptable, but thrives best in a well-established tank.
  • Requires good water quality to prevent stress-related illnesses.

Compatibility

  • Generally peaceful but can become territorial towards similar-looking fish.
  • Compatible with other reef-safe species such as clownfish, gobies, and wrasses.
  • Avoid housing with large aggressive predators that may view it as prey.
  • Does well in community aquariums when given adequate space and hiding areas.

Aquarium Behavior

  • Frequently perches on rocks, observing its surroundings with quick, darting movements.
  • Often engages in comical behavior, such as peeking out from crevices or "hopping" along the substrate.
  • Can be curious and interactive, recognizing familiar faces over time.
  • Spends much of its time grazing, contributing to algae control in the aquarium.